Overhead Coiling Doors
Remade from scratch to the authoring rules: defaults asserted only where four of five projects would choose them, and scope boundaries matched to the neighboring standards
Showing changes from Rev 3
to Rev 4
in Overhead Coiling Doors.
−---
−title: Overhead Coiling Doors
−category: Architectural / Openings
−toc_depth: 3
−description: >
− When to use: Overhead coiling doors and coiling closures where the curtain rolls onto a barrel above the opening rather than tracking horizontally overhead. Covers non-insulated and insulated coiling service doors, coiling counter doors, coiling grilles (rod and brick-pattern), and fire-rated coiling doors and counter shutters. Establishes performance criteria for wind load, air infiltration, thermal transmittance, cycle life, and fire rating; curtain slat profiles, material, gauge, and finishes; hood, guides, brackets, counterbalance, and bottom bar; manual, chain-hoist, and motor operation with UL 325 entrapment protection; weatherseals and integral pass conditions; installation, field testing including the NFPA 80 fire-door drop test; and warranty.
− Not intended for: Sectional overhead doors whose panels track horizontally beneath the ceiling (see [[sync/sectional-overhead-doors]]); high-speed fabric or rubber roll-up doors; loading-dock equipment such as levelers, seals, and shelters; swinging or sliding fire doors and hollow metal openings (see [[sync/doors-frames-and-hardware]]); storefront and entrance systems (see [[sync/aluminum-entrances-and-storefronts]]); operable partitions and security shutters not serving an exterior or rated opening.
−---
−
−# Scope {toc}
−
−## This standard covers the furnishing, installation, and commissioning of overhead coiling doors and coiling closures in commercial, institutional, and industrial construction. {note}
−## The scope includes non-insulated and insulated coiling service doors, coiling counter doors and counter shutters, coiling grilles, and fire-rated coiling doors. {note}
−
−## Scope Basis {toc}
−
−### Opening sizes, locations, fire ratings, and wind-load design pressures shall be as indicated on the contract drawings.
−
−### This standard establishes the minimum performance, material, fabrication, operation, installation, and inspection requirements that apply to each of those conditions.
−
−## What a Coiling Door Is {toc}
−
−### A coiling door is an assembly in which a curtain of interlocking horizontal steel slats — or a grille of horizontal rods and vertical links — rolls onto a counterbalanced barrel mounted on brackets above the head of the opening, runs in vertical guides at each jamb, and is concealed by a sheet-metal hood. {note}
−
−### Because the curtain coils rather than swings, a coiling door occupies almost no floor or ceiling space when open, which is why it is selected for openings where headroom is limited or where a horizontally tracked door would obstruct the space behind the opening. {note}
−
−### The trade-off is that the entire assembly is engineered as a balanced rolling system — the counterbalance spring, the curtain weight, the guide engagement, and the operator must be matched to the specific opening size and to the design wind load. {note}
−
−### A coiling door is not a catalog commodity that can be cut to fit in the field; each unit is fabricated for its opening and its loads. {note}
−
−## Coordination {toc}
−
−### Coordinate this work with the structural and masonry trades that form the opening and provide the jambs and lintel to which guides and brackets anchor (see [[sync/unit-masonry]] and [[sync/structural-steel-framing]]).
−
−### Coordinate this work with the electrical trade for power and control wiring to motor operators.
−
−### Coordinate this work with [[sync/fire-alarm-systems]] for release of fire-rated coiling doors on alarm or detector signal.
−
−### Coordinate this work with [[sync/firestopping]] where the head and jamb conditions of a rated door penetrate or terminate at a rated wall.
−
−# Referenced Standards {toc}
−
−## Materials, fabrication, testing, and installation shall comply with the latest adopted edition of the referenced standards.
−
−## Conflict Precedence {toc}
−
−### Where the contract documents or the adopted building code impose more stringent requirements than a referenced standard, the more stringent requirement shall govern.
−
−### The Contractor shall resolve conflicts in writing with the Engineer of Record before proceeding.
−
−## Standards Table {toc}
−
−| Standard | Title |
−|----------|-------|
−| ANSI/DASMA 102 | Specifications for Sectional Doors (counterbalance, cable, and component safety-factor conventions applied to coiling assemblies) |
−| ANSI/DASMA 105 | Test Method for Thermal Transmittance and Air Infiltration of Garage Doors |
−| ANSI/DASMA 108 | Standard Method for Testing Sectional Garage Doors and Rolling Doors: Determination of Structural Performance Under Uniform Static Air Pressure Difference |
−| ANSI/DASMA 115 | Standard Method for Testing Sectional Garage Doors and Rolling Doors: Determination of Structural Performance Under Missile Impact and Cyclic Wind Pressure |
−| ANSI/DASMA 118 | Standard Method for Testing Sectional Garage Doors and Rolling Doors: Determination of Structural Performance Under Cyclic Wind Loading |
−| NFPA 80 (2025 Edition) | Standard for Fire Doors and Other Opening Protectives |
−| NFPA 252 | Standard Methods of Fire Tests of Door Assemblies |
−| UL 10B | Fire Tests of Door Assemblies (neutral-pressure test referenced for rolling steel fire doors and sensing edges) |
−| UL 10C | Positive Pressure Fire Tests of Door Assemblies |
−| ANSI/UL 325 | Standard for Door, Drapery, Gate, Louver, and Window Operators and Systems |
−| ASTM E330 | Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights, and Curtain Walls by Uniform Static Air Pressure Difference |
−| ASTM E283 | Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences |
−| ASTM E1886 | Standard Test Method for Performance of Exterior Windows, Doors, Shutters, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials |
−| ASTM E1996 | Standard Specification for Performance of Exterior Windows, Doors, Shutters, and Impact Protective Systems Impacted by Windborne Debris |
−| ASTM A653 | Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process |
−| IBC Chapter 7 / Table 716.1(1) | Fire and Smoke Protection Features — Opening Protectives |
−| ASCE 7 | Minimum Design Loads and Associated Criteria for Buildings and Other Structures (wind-load determination) |
−
−# Submittals {toc}
−
−## Action Submittals {toc}
−
−### The following submittals shall be submitted for review and returned before fabrication or procurement begins.
−
−```datasheet
−label: Action Submittals Required
−type: checkbox
−options:
− - "Door schedule cross-referenced to drawings"
− - "Shop drawings with clearance and anchorage details"
− - "Product data for curtain, finish, seals, operator, and controls"
− - "Wind-load calculations or test report (where design pressure specified)"
− - "Fire-door NRTL listing documentation (rated openings)"
− - "Operator and UL 325 entrapment-protection documentation (powered doors)"
−default: "Door schedule cross-referenced to drawings"
−```
−
−### Because each coiling door is engineered for its opening and loads, the submittal shall be specific to the door schedule and shall not consist of generic catalog literature alone.
−
−### Submit a Door Schedule listing every coiling unit by mark number, including opening width and height, door type (service, insulated service, counter, grille, fire-rated), curtain material and gauge, fire-rating period where applicable, design wind-load pressure where applicable, operation type, mounting condition (face-of-wall or between-jambs), and finish.
−
−### Submit Shop Drawings for each door type showing curtain slat profile, guide and bracket details, hood profile and projection, counterbalance barrel and spring data, bottom bar, required headroom and sideroom, anchorage to the structure, and the location of the fire-door label where applicable, indicating the clearances the door requires so that the opening and the surrounding construction can be verified before fabrication.
−
−### Submit Product Data — the manufacturer's technical data for the curtain, finish system, weatherseals, operator, controls, and entrapment-protection devices.
−
−### Submit Wind-Load Engineering — for doors with a specified design pressure, structural calculations or a current test report demonstrating compliance with ANSI/DASMA 108 (and ANSI/DASMA 115 or ASTM E1886/E1996 where windborne-debris resistance is required) at the design pressure for the opening.
−
−### Submit Fire-Door Listing Documentation — for each fire-rated coiling door, the Nationally Recognized Testing Laboratory listing covering the door type, the rating period, the maximum size, the wall construction, and the release and reset mechanism.
−
−### Submit Operator and UL 325 Compliance Documentation — for powered doors, the operator listing, the entrapment-protection scheme, and confirmation that the operator and its monitored safety devices comply with the edition of UL 325 in force.
−
−## Closeout Submittals {toc}
−
−### At substantial completion the Contractor shall provide the following before final acceptance:
−
−- Operation and maintenance manuals for each door type, including lubrication points, counterbalance adjustment procedure, and operator and control programming
−- Final as-built door schedule reflecting field conditions
−- Warranty documentation from the door manufacturer and the operator manufacturer
−- For fire-rated coiling doors, the manufacturer's reset instructions and the record of the acceptance drop test performed under NFPA 80, together with written instruction to the Owner regarding the mandatory annual drop test and inspection
−- For powered doors, the record of the UL 325 entrapment-protection functional test
−
−```datasheet
−label: Closeout Submittals Required
−type: checkbox
−options:
− - "Operation and maintenance manuals"
− - "Final as-built door schedule"
− - "Warranty documentation (door and operator)"
− - "Fire-door reset instructions and acceptance drop-test record"
− - "Annual drop-test instruction package to Owner"
− - "UL 325 entrapment-protection functional test record"
−default: "Operation and maintenance manuals"
−```
−
−# Quality Assurance {toc}
−
−## Manufacturer Qualifications {toc}
−
−### The coiling door manufacturer shall demonstrate a minimum of five years of continuous production of coiling doors of the types and sizes required on the project.
−
−### For fire-rated coiling doors, the manufacturer shall maintain a current, active listing with a Nationally Recognized Testing Laboratory for each rating period required on the project.
−
−## Installer Qualifications {toc}
−
−### The installer shall be a firm trained and authorized by the door manufacturer to install and adjust the products supplied.
−
−### For fire-rated coiling doors, the installer shall be qualified to install the listed release and reset mechanism and to perform the acceptance drop test in accordance with NFPA 80.
−
−## Single-Source Responsibility {toc}
−
−```datasheet
−label: Single-Source Responsibility
−type: radio
−options:
− - "Door, counterbalance, operator, and controls from one manufacturer or its authorized system"
− - "Operator and controls by others, coordinated by the door manufacturer"
−default: "Door, counterbalance, operator, and controls from one manufacturer or its authorized system"
−```
−
−### Single-source responsibility is preferred because the counterbalance, the curtain weight, the guide engagement, and the operator must be matched as a system; splitting responsibility across vendors creates a coordination gap precisely at the interface that determines whether the door is balanced and whether the operator can move the curtain without overloading. {note}
−
−# Performance Basis {toc}
−
−## The most common in-service failures of coiling doors trace to a performance requirement that was understated at procurement — a door selected without a wind-load rating that the code required for its location, a fire-rated door whose closing speed or reset behavior was never verified, or an exterior door with no air-infiltration limit on a conditioned building. {note}
−
−## The requirements in this section stand independent of the catalog model and shall be satisfied for the specific opening.
−
−# Wind Load {toc}
−
−## Design Wind Pressure {toc}
−
−```datasheet
−label: Design Wind Pressure (positive/negative, ASCE 7)
−type: range
−unit: psf
−options:
− min: 15
− max: 100
− setpoints: [15, 20, 25, 30, 40, 50, 60, 70, 80, 100]
−drawing_ref: true
−default: 30
−```
−
−### The design wind pressure for each exterior coiling door shall be determined in accordance with ASCE 7 for the building's risk category, basic wind speed, exposure, and the door's height and location on the wall, including the higher pressures that apply at building corners and edge zones.
−
−### Door manufacturers publish wind-load tables, but the design pressure is a property of the building and the opening, not of the door; it shall be established by the design team and indicated on the drawings.
−
−## Structural Test Method {toc}
−
−```datasheet
−label: Wind-Load Structural Verification
−type: radio
−options:
− - "Manufacturer wind-load table covering the design pressure"
− - "Test report to ANSI/DASMA 108 / ASTM E330 at the design pressure"
− - "Not required (interior door)"
−default: "Manufacturer wind-load table covering the design pressure"
−```
−
−### Each exterior coiling door shall be designed and, where required, tested to withstand the design wind pressure without permanent deformation that impairs operation.
−
−### Structural performance shall be demonstrated under uniform static air pressure in accordance with ANSI/DASMA 108 or ASTM E330.
−
−## Windborne-Debris Resistance {toc}
−
−```datasheet
−label: Windborne-Debris (Impact) Rating Required
−type: radio
−options:
− - "No — outside windborne-debris region"
− - "Yes — large- and small-missile impact per ASTM E1886/E1996"
− - "Yes — missile impact and cyclic wind per ANSI/DASMA 115"
−drawing_ref: true
−default: "No — outside windborne-debris region"
−```
−
−### In windborne-debris regions, exterior coiling doors shall additionally resist large- and small-missile impact and the subsequent cyclic pressure loading in accordance with ASTM E1886 and the impact classification of ASTM E1996, or the missile-impact and cyclic-wind method of ANSI/DASMA 115.
−
−### Windborne-debris resistance is a separate requirement from static wind pressure; a door rated for the static pressure is not necessarily impact-rated. {note}
−
−# Air Infiltration {toc}
−
−```datasheet
−label: Maximum Air Infiltration (ASTM E283 at 1.57 psf / 25 mph)
−type: range
−unit: cfm/sf
−options:
− min: 0.3
− max: 1.5
− setpoints: [0.3, 0.5, 0.8, 1.0, 1.5]
−default: 1.0
−```
−
−## Exterior coiling doors on conditioned buildings shall have a maximum air-infiltration rate verified in accordance with ASTM E283 (or the air-infiltration method of ANSI/DASMA 105) at the specified test pressure.
−
−## Coiling-door curtains leak primarily at the slat interlocks, the guides, and the bottom bar, so the infiltration limit drives the selection of slat-interlock weatherseals, guide weatherstrip, and bottom-bar astragal. {note}
−
−# Fire Rating {toc}
−
−## Required Rating {toc}
−
−```datasheet
−label: Fire-Resistance Rating
−type: radio
−options:
− - "Not fire rated"
− - "3/4 hour (45 min) — corridor / partition opening"
− - "1-1/2 hour (90 min)"
− - "3 hour (180 min)"
− - "4 hour (240 min)"
−drawing_ref: true
−default: "Not fire rated"
−```
−
−### The fire-protection rating of a coiling door shall be as required by the adopted building code for the rated wall in which it occurs.
−
−### Under IBC Table 716.1(1), the opening-protective rating is keyed to the wall rating; fire-rated coiling doors are commonly furnished in 3/4-hour, 1-1/2-hour, 3-hour, and 4-hour periods, and the required period for each opening shall be indicated on the drawings. {note}
−
−## Test Standard and Labeling {toc}
−
−### Fire-rated coiling doors shall be tested and labeled in accordance with NFPA 252 or UL 10B and shall bear the label of a Nationally Recognized Testing Laboratory.
−
−### The label shall remain legible and permanently affixed.
−
−### The assembly as installed — curtain, guides, hood, release mechanism, and wall construction — shall match the conditions of the listing.
−
−### Sensing edges used on powered fire-rated doors shall be tested and listed as components of the rolling steel fire-door assembly under UL 10B.
−
−## Release, Closing, and Reset {toc}
−
−```datasheet
−label: Fire-Door Release Method
−type: radio
−options:
− - "Fusible link (separates at 165°F) releasing the curtain to gravity close"
− - "Fail-safe electric (governor-controlled) release on fire alarm or detector signal, with fusible link backup"
−default: "Fusible link (separates at 165°F) releasing the curtain to gravity close"
−```
−
−### On release, the curtain shall descend by gravity under the control of a speed governor, and the average closing speed shall be not less than 6 in./s and not more than 24 in./s in accordance with NFPA 80.
−
−### After automatic closing the bottom bar shall come to rest in the fully closed position.
−
−### The door shall be capable of being reset only by replacing the fusible link or manually resetting the listed releasing mechanism per the manufacturer's instructions.
−
−### A powered fire-rated door shall not reset until any fire-alarm relay has returned to its normal, non-alarm state.
−
−### Coordinate the release with [[sync/fire-alarm-systems]] where alarm-initiated release is specified.
−
−# Cycle Life {toc}
−
−```datasheet
−label: Duty / Cycle-Life Class
−type: radio
−options:
− - "Standard duty — up to 20 cycles/day"
− - "Heavy duty — 20 to 50 cycles/day"
− - "High cycle — 50+ cycles/day (cycle-tested barrel and counterbalance)"
−default: "Standard duty — up to 20 cycles/day"
−```
−
−## The duty rating of a coiling door shall match its expected use.
−
−## A coiling counter door at a concession opens many times a day; a fire-rated door in a wall opening may operate only at the annual test. {note}
−
−## Specify the duty class so that the counterbalance, guides, and operator are sized for the service.
−
−# Thermal Performance (Insulated Doors) {toc}
−
−```datasheet
−label: Insulated Curtain Thermal Value (R-value, ANSI/DASMA 105)
−type: range
−unit: hr·ft²·°F/Btu
−options:
− min: 6
− max: 11
− setpoints: [6, 7, 8, 9, 10, 11]
−default: 8
−```
−
−## Where an insulated coiling door is specified on a conditioned opening, the curtain shall achieve the specified thermal value, verified in accordance with ANSI/DASMA 105.
−
−## Insulated coiling-door curtains use roll-formed slats sandwiching a foamed-in-place polyurethane core; procurable assemblies commonly reach an installed R-value in the range of about R-6 to R-11, with corresponding STC values in the low-to-upper 20s. {note}
−
−# Door Assembly {toc}
−
−## Door Type {toc}
−
−```datasheet
−label: Coiling Door Type
−type: radio
−options:
− - "Service door — interlocking steel slat curtain, non-insulated"
− - "Insulated service door — foamed slat curtain"
− - "Counter door — small opening over a counter or pass-through"
− - "Coiling grille — horizontal rods and vertical links (security/visibility)"
− - "Fire-rated coiling door — labeled assembly"
−drawing_ref: true
−default: "Service door — interlocking steel slat curtain, non-insulated"
−```
−
−## Curtain and Slats {toc}
−
−### Slat Profile {toc}
−
−```datasheet
−label: Slat Profile
−type: radio
−options:
− - "Flat / minimal-curve slat"
− - "Curved (crowned) slat"
− - "Insulated foamed flat slat (double-skin)"
− - "Grille — rod-and-link (not a slat curtain)"
−default: "Curved (crowned) slat"
−```
−
−#### The curtain shall consist of roll-formed interlocking slats.
−
−#### The selected slat profile shall be confirmed against the opening size and the design wind pressure, because slat stiffness contributes to the door's resistance to wind.
−
−#### Flat-profile slats present a cleaner appearance and are common at storefront and architectural openings; curved (crowned) slats add stiffness and are common on larger industrial openings. {note}
−
−### Curtain Material {toc}
−
−```datasheet
−label: Curtain Material
−type: radio
−options:
− - "Galvanized steel (ASTM A653)"
− - "Aluminum"
− - "Stainless steel (Type 304)"
−default: "Galvanized steel (ASTM A653)"
−```
−
−#### Galvanized steel is the default for interior and most exterior openings. Aluminum is selected for corrosion resistance and reduced curtain weight, often on counter doors and grilles. Stainless steel is selected for corrosive, washdown, or food-service environments and for architectural exposure. {note}
−
−### Slat Gauge {toc}
−
−```datasheet
−label: Steel Slat Gauge
−type: radio
−options:
− - "24 gauge (small to moderate openings)"
− - "22 gauge"
− - "20 gauge"
− - "18 gauge (large or high-wind openings)"
−drawing_ref: true
−default: "22 gauge"
−```
−
−#### The slat gauge shall be selected for the opening size and design wind pressure; larger and higher-pressure openings require heavier slats.
−
−#### The default above covers typical commercial service-door openings. {note}
−
−### Windlocks {toc}
−
−```datasheet
−label: Windlocks
−type: radio
−options:
− - "Not required at design pressure"
− - "Provided as required by wind-load listing"
−default: "Not required at design pressure"
−```
−
−#### Where the design wind pressure exceeds the capacity of the plain slat-in-guide engagement, the curtain shall be fitted with windlocks (slat-end clips that engage the guide) at the spacing required by the manufacturer's wind-load listing for the design pressure.
−
−## Hood {toc}
−
−```datasheet
−label: Hood Material
−type: radio
−options:
− - "Galvanized steel"
− - "Aluminum"
− - "Stainless steel"
−default: "Galvanized steel"
−```
−
−### A sheet-metal hood shall enclose the coiled curtain and barrel.
−
−### The hood material shall match or be compatible with the curtain finish.
−
−### On fire-rated doors the hood shall be of the type and gauge included in the listing.
−
−### Provide an intermediate support at the hood mid-span on wide openings to prevent sag.
−
−## Guides {toc}
−
−### The guides shall be structural angle or formed sections sized to retain the curtain under the design wind load and to resist the reaction from windlocks where used.
−
−### Guides shall be fastened to the jamb at the spacing required by the wind-load listing.
−
−### On fire-rated doors the guide depth and fastening shall match the listing.
−
−## Brackets and Barrel {toc}
−
−### The brackets shall support the barrel and counterbalance at each end and shall transfer the curtain and wind reactions to the structure.
−
−### The barrel (the steel pipe onto which the curtain coils) shall be sized so that deflection under the curtain load does not impair operation.
−
−## Counterbalance {toc}
−
−### The counterbalance shall be a helical torsion spring assembly within the barrel, designed to balance the curtain weight throughout travel so that the door can be operated with the specified effort.
−
−### Counterbalance design conventions shall follow the safe-conversion-of-spring-torque and minimum-life intent of ANSI/DASMA 102.
−
−### Manual doors shall be balanced to be moved with reasonable effort and powered doors balanced to the operator's rating.
−
−### The counterbalance shall be adjustable in the field to retension the curtain.
−
−## Bottom Bar {toc}
−
−### The bottom bar shall be a formed or extruded section reinforcing the lower edge of the curtain and providing the surface for the bottom weatherseal.
−
−### On powered doors the bottom bar shall carry the sensing edge where used for entrapment protection.
−
−### The bottom bar shall seat squarely on the floor or sill in the closed position.
−
−# Operation and Operators {toc}
−
−## Operation Type {toc}
−
−```datasheet
−label: Operation Type
−type: radio
−options:
− - "Manual push-up"
− - "Manual chain hoist (hand chain and reduction)"
− - "Motor operator — wall/jamb mount"
− - "Motor operator — bracket/hood mount"
− - "Tube (barrel) motor — low headroom"
−default: "Manual chain hoist (hand chain and reduction)"
−```
−
−### The means of operation shall be selected for the door size, weight, frequency of use, and whether powered operation is functionally required.
−
−### Manual push-up is suitable only for small, well-balanced doors. Chain hoist is the default for larger manually operated doors. Motor operation is selected for high-frequency use, large or heavy curtains, and remote or automated control. {note}
−
−## Motor Operator Controls {toc}
−
−```datasheet
−label: Operator Control Type
−type: radio
−options:
− - "Three-button (open / close / stop), constant-pressure close"
− - "Three-button momentary with monitored entrapment protection"
− - "Three-button with radio/remote and access-control interface"
−default: "Three-button momentary with monitored entrapment protection"
−```
−
−### Specify a manual override (chain hoist or hand crank) for powered doors so the curtain can be operated during a power failure.
−
−### Coordinate operator electrical requirements — voltage, phase, disconnect, and conduit — with the electrical drawings.
−
−### The operator location shall be confirmed against the available headroom and sideroom before rough-in.
−
−## UL 325 Entrapment Protection {toc}
−
−```datasheet
−label: UL 325 Entrapment Protection Scheme
−type: radio
−options:
− - "Inherent reversing system plus monitored sensing edge (external)"
− - "Inherent reversing system plus monitored photo-eye (external)"
− - "Constant-pressure close (no automatic close) — where permitted"
−default: "Inherent reversing system plus monitored sensing edge (external)"
−```
−
−### Powered coiling doors shall comply with the edition of UL 325 in force.
−
−### Under the 2016 and later requirements, each entrapment point shall be protected by at least two independent means of entrapment protection.
−
−### Every external entrapment-protection device shall be monitored by the operator at least once per cycle for both proper operation and proper connection.
−
−### On a monitored-device fault the operator shall inhibit powered closing.
−
−### An inherent reversing system alone does not satisfy the two-means requirement, and a duplicate of the same device does not count as the second means. {note}
−
−### On a powered fire-rated door, the entrapment-protection devices shall be coordinated with the fire-door release so that an alarm-initiated gravity closing is not blocked by the entrapment devices, while normal powered operation remains protected.
−
−# Finishes {toc}
−
−```datasheet
−label: Curtain / Hood Finish
−type: radio
−options:
− - "Mill galvanized (no topcoat)"
− - "Factory primer (field-finish by painting trade)"
− - "Factory-applied baked polyester powder coat"
− - "Anodized (aluminum)"
− - "No. 4 brushed (stainless)"
−default: "Factory-applied baked polyester powder coat"
−```
−
−## Finish Coordination {toc}
−
−### Where the curtain is factory-primed only, coordinate the topcoat with [[sync/exterior-painting]] or [[sync/interior-painting]] as applicable.
−
−### Confirm color selection against the manufacturer's standard powder-coat range before order.
−
−# Weatherseals {toc}
−
−```datasheet
−label: Weatherseal Package
−type: checkbox
−options:
− - "Bottom-bar astragal (floor seal)"
− - "Guide weatherstrip (jamb seals)"
− - "Header / hood baffle seal"
− - "Interlock slat seals (insulated doors)"
−default: "Bottom-bar astragal (floor seal)"
−```
−
−## Weatherseal Requirements {toc}
−
−### Exterior and conditioned-opening doors shall be furnished with the weatherseals needed to meet the specified air-infiltration limit: a bottom-bar astragal sealing to the floor, guide weatherstrip sealing the curtain edges, a hood baffle or header seal at the head, and, on insulated doors, interlock seals between slats.
−
−### Seals shall be replaceable without removing the curtain.
−
−# Installation {toc}
−
−## Opening Verification {toc}
−
−### The opening shall be verified before installation begins: width, height, plumb of the jambs, level of the head and sill, and the available headroom above the lintel and the sideroom at each jamb.
−
−### Headroom and sideroom are the clearances the coil and its brackets require; a coiling door cannot be installed in less than its required clearances, and the most common field conflict is a coil that does not fit the headroom because the door type was selected without checking the shop-drawing clearances against the as-built opening. {note}
−
−### Where clearances are tight, a low-headroom configuration (tube motor or reduced-coil design) shall be selected at the submittal stage, not discovered at installation.
−
−## Anchorage {toc}
−
−### Guides, brackets, and the operator shall be anchored to the structural substrate using the fasteners and embedment shown on the wind-load and listing drawings; anchorage shall develop the wind and counterbalance reactions.
−
−### Where the door anchors to masonry, coordinate the anchor type and location with [[sync/unit-masonry]]; where it anchors to steel, coordinate with [[sync/structural-steel-framing]].
−
−### Anchorage into hollow masonry or to studs without solid blocking shall not be substituted for the listed anchorage on a fire-rated or wind-rated door.
−
−## Fire-Rated Door Installation {toc}
−
−### For a fire-rated coiling door the wall opening, the guides, the hood, and the release mechanism shall all be installed to match the conditions of the NRTL listing.
−
−### Where the head or jamb of a rated door interfaces with a rated wall assembly, coordinate the joint with [[sync/firestopping]].
−
−## Adjustment {toc}
−
−### After installation the curtain shall be cycled and the counterbalance adjusted so that a manual door moves with the specified effort and a powered door runs without binding, with the bottom bar seating squarely at the closed position.
−
−# Field Testing {toc}
−
−## Operational Test {toc}
−
−### Every coiling door shall be cycled through its full travel and adjusted so that it opens and closes smoothly, the curtain tracks in the guides without binding, the counterbalance holds the curtain at intermediate positions on manual doors, and the bottom bar seats fully closed and level.
−
−### Powered doors shall be tested for correct open, close, stop, and reversing function and for manual override operation.
−
−## UL 325 Entrapment-Protection Test {toc}
−
−### For each powered door, the entrapment-protection devices shall be functionally tested: obstructing the closing curtain shall cause the door to stop and reverse (or stop, per the listed behavior), and disconnecting or faulting a monitored external device shall inhibit powered closing.
−
−### Record the result for closeout.
−
−## Fire-Door Acceptance Drop Test {toc}
−
−```datasheet
−label: Required Field Tests
−type: checkbox
−options:
− - "Operational cycle and counterbalance adjustment (all doors)"
− - "UL 325 entrapment-protection functional test (powered doors)"
− - "NFPA 80 acceptance drop test, two cycles with reset (fire-rated doors)"
−default: "Operational cycle and counterbalance adjustment (all doors)"
−```
−
−### Each fire-rated coiling door shall be acceptance-tested by the manufacturer's qualified representative or trained installer in accordance with NFPA 80.
−
−### The door shall be released by each means of activation and dropped to the fully closed position, the average closing speed verified to be between 6 in./s and 24 in./s, and the bottom bar confirmed to seat closed.
−
−### The door shall then be reset per the manufacturer's instructions and the drop test repeated to verify that the release reset correctly — the test is performed and the door reset a minimum of two times.
−
−### The acceptance test record shall be provided at closeout.
−
−### The Owner shall be informed in writing that NFPA 80 requires every fire-rated coiling door to be drop-tested and inspected at least annually by a qualified technician for the life of the building, regardless of how often the door is otherwise operated, and that the records of those tests must be retained.
−
−### This annual obligation is the single most overlooked item in fire-rated coiling-door ownership; the closeout package shall make it explicit.
−
−# Warranty {toc}
−
−## Warranty Requirements {toc}
−
−### The door manufacturer shall warrant the coiling door against defects in materials and workmanship for the period specified below from the date of substantial completion.
−
−### The operator and its controls shall carry the operator manufacturer's warranty.
−
−### Warranty service shall include the labor to adjust or replace warranted components.
−
−## Warranty Periods {toc}
−
−```datasheet
−label: Door Manufacturer Warranty Period
−type: radio
−options:
− - "1 year"
− - "2 years"
− - "5 years (springs and curtain)"
−default: "2 years"
−```
−
−```datasheet
−label: Operator Warranty Period
−type: radio
−options:
− - "1 year"
− - "2 years"
− - "5 years"
−default: "2 years"
−```
+---
+title: Overhead Coiling Doors
+category: Architectural / Openings
+description: >
+ When to use: Opaque overhead coiling doors and coiling counter doors whose curtain of interlocking metal slats rolls onto a counterbalanced barrel above the opening, at service, dock, drive-through, parking, equipment-room, corridor, and counter openings in commercial, institutional, and industrial work. Covers non-insulated and insulated service doors, counter doors and counter shutters, and fire-rated coiling doors and counter shutters listed under NFPA 252 or UL 10B; design wind pressure, windborne-debris impact rating, thermal transmittance, and air leakage; fire-protection rating, release, governed closing, reset, and smoke and draft control listing; curtain slat construction, material, gauge, insulation, and vision; bottom bar, guides, brackets, barrel, counterbalance, and hood; weatherseals and locking; counter door sills and frames; push-up, chain hoist, crank, and motor operation with UL 325 entrapment protection, control mode, interfaces, enclosure type, and emergency manual operation; factory finishes; installation, anchorage, perimeter sealing, acceptance testing including the NFPA 80 drop test, warranty, and spare parts.
+ Not intended for: Open-mesh coiling grilles of rods and links, including fire-rated coiling grilles (see [[sync/coiling-grilles]]); sectional overhead doors whose hinged panels track horizontally beneath the ceiling (see [[sync/sectional-overhead-doors]]); dock levelers, dock seals and shelters, bumpers, vehicle restraints, and the dock interlock system (see [[sync/loading-dock-equipment]]); swinging hollow metal doors and frames (see [[sync/exterior-doors-and-frames]]) and swinging openings bought as one combined package (see [[sync/doors-frames-and-hardware]]); aluminum storefront and entrance systems (see [[sync/aluminum-entrances-and-storefronts]]); the fire alarm control unit and the release circuit that signals a fire door to close (see [[sync/fire-alarm-systems]]); field painting over a factory prime coat (see [[sync/exterior-painting]] and [[sync/interior-painting]]); the masonry, steel, metal building, or light-gauge framing that forms the opening and carries the guides and brackets (see [[sync/unit-masonry]], [[sync/structural-steel-framing]], [[sync/metal-building-systems]], and [[sync/cold-formed-metal-framing]]); the branch circuit and raceway to the operator (see [[sync/conductors-and-cables]] and [[sync/raceways-and-conduit]]); and high-speed fabric and rubber roll-up doors, impact traffic doors, fire-protective curtain assemblies, and exterior storm shutters at windows, which no standard in this library covers.
+---
+
+# Scope {toc}
+
+## This standard governs the furnishing and installation of opaque overhead coiling doors and coiling counter doors. The curtain is a set of interlocking horizontal metal slats that runs in a guide at each jamb and rolls onto a spring-counterbalanced barrel carried on brackets above the head of the opening, under a hood. The standard covers non-insulated and insulated service doors, counter doors and counter shutters, and the fire-rated doors and counter shutters of the same construction that are listed as opening protectives. {note}
+
+## The furnished work shall comprise the curtain, bottom bar, guides, brackets, barrel, counterbalance, and hood of every scheduled door; the weatherseals, locks, and sills furnished with it; the operator, control station, entrapment protection devices, and the low-voltage wiring between them on every powered door; the release device, governor, and reset mechanism on every fire-rated door; and the installation, adjustment, and acceptance testing of all of it.
+
+## A coiling door is selected where the space above and behind the opening cannot carry an open door. Because the curtain coils, the assembly occupies a coil of roughly 12 to 24 in. above the head and a bracket at each jamb, and nothing behind the opening. The price of that geometry is that every unit is engineered for its opening: the spring is wound for the curtain weight, the slat gauge and the guide engagement are set for the opening width at the design wind pressure, and the operator is sized for the balanced load. A coiling door is not stock that can be cut to fit in the field. {note}
+
+## Open-mesh coiling grilles, whose curtain of rods and links stays about three-quarters open when closed, are a different product and are governed by [[sync/coiling-grilles]], including the fire-rated grilles listed as opening protectives. Where a closed opening must stop smoke, weather, heat, or sound, the opaque curtain of this standard is the product. Sectional overhead doors are governed by [[sync/sectional-overhead-doors]]. The dock levelers, seals, shelters, restraints, and the interlock that ties them together at a loading dock are governed by [[sync/loading-dock-equipment]]; this standard furnishes the door itself and the control interface the interlock signals. {note}
+
+## The opening itself is a separate subject. The jambs, the lintel or header, and the wall above the head that the guides and brackets anchor to are furnished under [[sync/unit-masonry]], [[sync/structural-steel-framing]], [[sync/metal-building-systems]], or [[sync/cold-formed-metal-framing]], and a metal building manufacturer frames the jambs and header the door anchors to, with the door itself outside that manufacturer's supply. The branch circuit and raceway to a motor operator are furnished under [[sync/conductors-and-cables]] and [[sync/raceways-and-conduit]]. The fire alarm control unit, the output module, and the circuit that signal a fire-rated door to close are governed by [[sync/fire-alarm-systems]]; this standard furnishes the release device that circuit operates. {note}
+
+## Swinging hollow metal doors and frames at adjacent openings are governed by [[sync/exterior-doors-and-frames]], a swinging opening bought as one package by [[sync/doors-frames-and-hardware]], and storefront and entrance systems by [[sync/aluminum-entrances-and-storefronts]]. High-speed fabric and rubber roll-up doors, impact traffic doors, fire-protective curtain assemblies tested to UL 10D, and exterior storm shutters at windows have no standard in this library and are specified by project-specific design outside this standard. {note}
+
+## Opening width and height, hand of operation, and the elevation of the finished floor or sill at each door shall be as indicated on [[drawing: the door schedule]].
+
+## The mounting arrangement at each door, face of wall or between jambs, and the side of the wall the coil occupies shall be as indicated on [[drawing: the door schedule]].
+
+## The Contractor shall reconcile the door schedule, the shop drawings, and the as-built opening dimensions, headroom, and sideroom against one another before any door is released for fabrication.
+
+## The coil, the brackets, and the operator each need a stated clearance, and a door fabricated before the as-built opening is measured is the one that arrives with a coil the lintel does not clear or a bracket the return wall interferes with. The reconciliation sits ahead of fabrication because a coiling door cannot be trimmed to fit. {note}
+
+## A coiling door shall not serve as a required means of egress door except where [[parameter: adopted-building-code]] permits a door of that type at the opening.
+
+# Referenced Standards {toc}
+
+## Products, fabrication, testing, and installation shall comply with the latest adopted edition of each of the following unless a specific edition is cited.
+
+## Where referenced standards conflict, the more stringent requirement shall govern unless the Architect directs otherwise in writing.
+
+## Fire-rated doors shall comply with the edition of the fire test standard under which the assembly is listed, and [[parameter: adopted-building-code]] governs which opening protective rating applies at each opening.
+
+| Standard | Title |
+|----------|-------|
+| ANSI/DASMA 105 | Test Method for Thermal Transmittance and Air Infiltration of Garage Doors |
+| ANSI/DASMA 108 | Standard Method for Testing Sectional Garage Doors and Rolling Doors: Determination of Structural Performance Under Uniform Static Air Pressure Difference |
+| ANSI/DASMA 115 | Standard Method for Testing Sectional Garage Doors and Rolling Doors: Determination of Structural Performance Under Missile Impact and Cyclic Wind Pressure |
+| ANSI/UL 325 | Standard for Door, Drapery, Gate, Louver, and Window Operators and Systems |
+| UL 10B | Fire Tests of Door Assemblies |
+| UL 33 | Heat Responsive Links for Fire-Protection Service |
+| UL 50E | Enclosures for Electrical Equipment, Environmental Considerations |
+| UL 1784 | Air Leakage Tests of Door Assemblies and Other Opening Protectives |
+| NFPA 70 | National Electrical Code |
+| NFPA 72 | National Fire Alarm and Signaling Code |
+| NFPA 80 | Standard for Fire Doors and Other Opening Protectives |
+| NFPA 105 | Standard for Smoke Door Assemblies and Other Opening Protectives |
+| NFPA 252 | Standard Methods of Fire Tests of Door Assemblies |
+| ASTM A36/A36M | Carbon Structural Steel |
+| ASTM A653/A653M | Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process |
+| ASTM A666 | Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar |
+| ASTM B209 | Aluminum and Aluminum-Alloy Sheet and Plate |
+| ASTM B221 | Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes |
+| ASTM C1363 | Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus |
+| ASTM E283 | Determining Rate of Air Leakage Through Exterior Windows, Skylights, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen |
+| ASTM E330/E330M | Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference |
+| ASTM E1886 | Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials |
+| ASTM E1996 | Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Windborne Debris in Hurricanes |
+| AAMA 611 | Voluntary Specification for Anodized Architectural Aluminum |
+| AAMA 2604 | Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels |
+| AAMA 2605 | Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels |
+| ASCE/SEI 7 | Minimum Design Loads and Associated Criteria for Buildings and Other Structures |
+| NEMA 250 | Enclosures for Electrical Equipment (1000 Volts Maximum) |
+| IBC | International Building Code, Chapters 7 and 10 |
+
+# Submittals {toc}
+
+## Action Submittals {toc}
+
+### The submittals listed below shall be reviewed and returned before any door is released for fabrication.
+
+- Door schedule listing every coiling door by opening mark with its width, height, mounting arrangement, curtain construction, material, gauge, and insulation, fire-protection rating and smoke listing where scheduled, design wind pressure and impact rating where scheduled, cycle life, operation, operator mounting, control mode, enclosure type, locking, weatherseals, and finish
+- Shop drawings for each door type showing the slat profile, guide section and fastening, bracket plate and anchorage, barrel and spring data, bottom bar and sensing edge, hood profile and support, operator and control station locations, headroom, sideroom, and clearance to the structure, and the fire door label location where applicable
+- Product data for the curtain, insulation, finish system, weatherseals, locks, operator, controls, entrapment protection devices, and release and reset devices
+- Wind-load compliance documentation at the design pressure for each exterior opening, in the form the Wind Load and Windborne Debris section of this standard selects
+- Fire door listing documentation for each rated door, naming the listing laboratory, the rating period, the maximum listed size, the wall constructions covered, and the release, governor, and reset devices within the listing
+- Operator listing and UL 325 entrapment protection documentation for each powered door, with the wiring diagram between the operator, the control station, the entrapment protection devices, and every external interface
+- Finish samples of each factory finish and color on the slat material furnished
+
+```datasheet
+label: Action Submittals Required
+type: checkbox
+options:
+ - "Door schedule by opening mark"
+ - "Shop drawings by door type"
+ - "Product data"
+ - "Wind-load compliance documentation"
+ - "Fire door listing documentation"
+ - "Operator listing and UL 325 documentation with wiring diagram"
+ - "Finish samples"
+default:
+ - "Door schedule by opening mark"
+ - "Shop drawings by door type"
+ - "Product data"
+ - "Wind-load compliance documentation"
+ - "Fire door listing documentation"
+ - "Operator listing and UL 325 documentation with wiring diagram"
+```
+
+### The shop drawings shall state the headroom and sideroom each door requires, and the Contractor shall record on them the field-measured headroom and sideroom at the opening before the submittal is made.
+
+### A generic catalog cut does not say whether the coil clears this lintel or whether the operator fits this sideroom. The field measurement on the shop drawing is the one place the two dimensions meet before steel is cut. {note}
+
+## Informational Submittals {toc}
+
+### The Contractor shall submit the following for record, without waiting for return, before the corresponding work begins.
+
+- Manufacturer qualification record and the current listings held for the rating periods required
+- Installer qualification record, including the manufacturer's training or authorization and, for fire-rated doors, the record of NFPA 80 acceptance testing on prior work
+- Manufacturer's published installation, adjustment, and maintenance instructions for each door type and operator
+- Pre-installation conference record
+
+```datasheet
+label: Informational Submittals Required
+type: checkbox
+options:
+ - "Manufacturer qualification and listing record"
+ - "Installer qualification record"
+ - "Installation, adjustment, and maintenance instructions"
+ - "Pre-installation conference record"
+default:
+ - "Manufacturer qualification and listing record"
+ - "Installer qualification record"
+ - "Installation, adjustment, and maintenance instructions"
+```
+
+## Closeout Submittals {toc}
+
+### The Contractor shall submit the following before final acceptance.
+
+- Operation and maintenance data for each door type, including the lubrication points, the counterbalance adjustment procedure, the operator limit and control settings, and the parts list
+- As-installed door schedule reflecting field changes, by opening mark
+- Executed warranties from the door manufacturer and the operator manufacturer, in the Owner's name
+- NFPA 80 acceptance test record for every fire-rated door, with the manufacturer's reset instructions
+- Written notice to the Owner of the annual inspection and drop test NFPA 80 requires for every fire-rated door
+- UL 325 functional test record for every powered door
+- Keys and the key record for every keyed lock, delivered against a signed receipt
+
+```datasheet
+label: Closeout Submittals Required
+type: checkbox
+options:
+ - "Operation and maintenance data"
+ - "As-installed door schedule"
+ - "Executed warranties"
+ - "NFPA 80 acceptance test record and reset instructions"
+ - "Annual inspection notice to the Owner"
+ - "UL 325 functional test record"
+ - "Keys and key record"
+default:
+ - "Operation and maintenance data"
+ - "As-installed door schedule"
+ - "Executed warranties"
+ - "NFPA 80 acceptance test record and reset instructions"
+ - "Annual inspection notice to the Owner"
+ - "UL 325 functional test record"
+ - "Keys and key record"
+```
+
+# Quality Assurance {toc}
+
+## Manufacturer Qualification {toc}
+
+### Coiling doors shall be produced by a manufacturer that produces coiling doors of the types and sizes required as a regular part of its business and that submits a record of comparable completed production.
+
+### For every fire-protection rating required on the project, the manufacturer shall hold a current listing from a nationally recognized testing laboratory covering the door construction, the size, and the wall construction to be furnished.
+
+### All coiling doors on the project shall be produced by one manufacturer unless the Architect accepts a second manufacturer in writing for a stated group of openings.
+
+## Installer Qualification {toc}
+
+### Coiling doors shall be installed by an installer trained or authorized by the door manufacturer for the products furnished.
+
+### Fire-rated doors shall be installed by personnel familiar with NFPA 80 who have performed the acceptance test NFPA 80 requires on prior installations, and the installer shall be able to produce the listing for every rated door on request.
+
+### Operators, controls, and entrapment protection devices shall be installed and adjusted by an installer trained by the operator manufacturer.
+
+## Source Responsibility {toc}
+
+### The source of the operator and controls relative to the door shall be as indicated in the datasheet.
+
+```datasheet
+label: Operator and Control Source
+type: radio
+options:
+ - "Door, counterbalance, operator, and controls furnished by the door manufacturer as one system"
+ - "Operator and controls furnished by a separate operator manufacturer and coordinated by the door manufacturer"
+default: "Door, counterbalance, operator, and controls furnished by the door manufacturer as one system"
+```
+
+### Where the operator is furnished separately, the door manufacturer shall confirm in writing before fabrication that the operator's torque, speed, and duty rating suit the balanced curtain load, and that the operator mounting fits the bracket and the sideroom.
+
+### The operator moves a curtain the spring has nearly balanced, so its torque, its brake, and its limit range are matched to a particular barrel and spring. One manufacturer for both leaves one party answerable when the door drifts, overruns, or stalls. A separate operator is selected where the Owner standardizes on one operator line across a facility for parts and service, or where a fire-rated door needs an operator the door manufacturer does not list with it, and the coordination letter is what closes the gap between the two vendors. {note}
+
+## Pre-Installation Conference {toc}
+
+### Before any guide is set, the Contractor shall convene a conference attended by the door installer, the trade that built the opening, the electrical contractor, and, for fire-rated doors, the fire alarm installer, and shall record its decisions.
+
+### The conference shall confirm, for every door, the as-built headroom and sideroom, the anchorage substrate at each jamb and at the head, the operator and control station locations, the power and the disconnect location, and, for fire-rated doors, the release signal source and the reset method.
+
+# Environmental and Service Conditions {toc}
+
+## The curtain material, the finish, the hardware, and the operator enclosure shall suit the exposure at each opening as that exposure is indicated on [[drawing: the door schedule]].
+
+## Doors at openings exposed to washdown, chemical vapor, de-icing salt, coastal air, or food-processing conditions shall be furnished with a stainless steel or aluminum curtain, bottom bar, and guides, with stainless steel fasteners, and with the operator and control enclosure the Operation section of this standard requires for that exposure.
+
+## A galvanized steel curtain holds its coating indoors and under ordinary weather. Under hose-down or salt it rusts first at the cut slat ends and the interlock, where the zinc is thinnest, and the stain runs down the curtain within a season. The exposure is settled per opening on the door schedule because one building often has both a dry interior door and a wash bay door. {note}
+
+## Operators, controls, and entrapment protection devices at exterior openings shall be rated by their manufacturers for continuous operation at [[parameter: site-ambient-temperature-minimum]] and [[parameter: site-ambient-temperature-maximum]].
+
+## Lubricants, weatherseals, and sensing edge compounds at exterior openings shall remain pliable at [[parameter: site-ambient-temperature-minimum]].
+
+## Where a door closes the conditioned envelope, the curtain shall be of the insulated construction selected under the Curtain section of this standard, and the door shall meet the thermal and air leakage requirements of the Thermal Performance and Air Leakage section.
+
+# Wind Load and Windborne Debris {toc}
+
+## Design Wind Pressure {toc}
+
+### Each exterior door, and each interior door that separates spaces at different pressures, shall resist the positive and negative design wind pressure indicated in [[drawing: the structural design criteria on the drawings]] without permanent deformation of the slats, the guides, or the brackets and without the curtain leaving the guides.
+
+### The design pressure is a property of the building and the opening, determined under ASCE/SEI 7 for the risk category, the basic wind speed, the exposure, the height of the door, and its position on the wall, where the zone pressures at corners run well above the field pressure. The door manufacturer rates a door for a pressure; the structural design sets the pressure the door at this opening must be rated for, which is why it comes from the structural criteria and not from the door catalog. {note}
+
+### The basis on which wind-load compliance is demonstrated shall be as indicated in the datasheet.
+
+```datasheet
+label: Wind-Load Compliance Basis
+type: select
+options:
+ - "Manufacturer's published wind-load rating for the door size at the design pressure"
+ - "Structural calculations for the door and its anchorage, sealed by a professional engineer"
+ - "Laboratory test report to ANSI/DASMA 108 or ASTM E330 at the design pressure"
+default: "Manufacturer's published wind-load rating for the door size at the design pressure"
+```
+
+### A published rating is a table the manufacturer derives from its own tests and calculations, and most building departments accept it for an ordinary opening. Sealed calculations are selected where the anchorage into this structure has to be engineered, where the door exceeds the published size envelope, or where the authority having jurisdiction will not accept a table. A test report is the form a state product approval program requires, and it is specific to the tested construction, so a door furnished on a test report is held to the slat, gauge, guide, and windlock arrangement that was in the test. {note}
+
+### Slat gauge, endlocks, windlocks, guide depth, and guide fastening at each door shall be those the selected compliance basis requires for the opening width at the design pressure.
+
+## Windborne-Debris Impact Resistance {toc}
+
+### Whether each exterior door is impact rated shall be determined from [[parameter: wind-borne-debris-region]] together with the risk category of the building.
+
+```datasheet
+label: Windborne-Debris Impact Rating
+type: select
+derived: "[[parameter: wind-borne-debris-region]] and the risk category of the building"
+options:
+ - "Not impact rated"
+ - "Impact rated for basic protection, ASTM E1996 Missile Level D"
+ - "Impact rated for enhanced protection, ASTM E1996 Missile Level E"
+default: derived
+```
+
+### Where [[parameter: wind-borne-debris-region]] places the site in a windborne debris region, exterior doors shall be tested to ASTM E1886 at the missile level ASTM E1996 assigns and then to the cyclic pressure sequence, or to ANSI/DASMA 115, and shall be furnished in the construction and size range the test report covers.
+
+### Glazed inserts in an impact-rated door shall be part of the tested assembly.
+
+### Impact resistance is a separate property from static pressure resistance. A door rated for the design pressure can still be holed by a 9 lb timber at 50 ft/s, and a holed door lets the wind pressurize the building from inside. The enhanced level is assigned to essential facilities and raises the missile speed; the basic level serves other buildings in the debris region. {note}
+
+# Thermal Performance and Air Leakage {toc}
+
+## Doors closing the conditioned envelope shall have a whole-door thermal transmittance, tested to ANSI/DASMA 105 or ASTM C1363, not exceeding the value indicated in the datasheet.
+
+```datasheet
+label: Maximum Whole-Door U-Factor
+type: range
+unit: "Btu/h·ft²·°F"
+derived: "the nonswinging opaque door limit of [[parameter: adopted-energy-code]] for [[parameter: climate-zone]]"
+min: 0.2
+max: 1.45
+setpoints: [0.2, 0.25, 0.3, 0.35, 0.4, 0.5, 0.6, 0.8, 1.0, 1.45]
+default: derived
+```
+
+## The energy code sets a maximum U-factor for a nonswinging opaque door by climate zone, and that limit is the value the field starts from. A tighter value is selected where an energy model trades envelope performance against equipment, or where a cold-storage or conditioned shop opening justifies it. The tested whole-door value includes the slat interlocks, the guides, and the bottom bar, and runs higher than the R-value of the slat alone; a manufacturer's slat R-value is not a whole-door U-factor and is not compared against this field. {note}
+
+## Thermal transmittance shall be reported for the whole door as tested, and a calculated slat value shall not be submitted in its place.
+
+## Doors closing the conditioned envelope shall have an air leakage rate, tested to ASTM E283 at a pressure difference of 1.57 psf, not exceeding the value indicated in the datasheet.
+
+```datasheet
+label: Maximum Air Leakage at 1.57 psf
+type: range
+unit: "cfm/ft²"
+derived: "the nonswinging door air leakage limit of [[parameter: adopted-energy-code]]"
+min: 0.1
+max: 1.5
+setpoints: [0.1, 0.2, 0.3, 0.4, 0.5, 0.75, 1.0, 1.5]
+default: derived
+```
+
+## A coiling curtain leaks at the slat interlocks, along the guides, under the bottom bar, and at the hood, so the leakage limit is met by the weatherseal set and not by the slat. A single-skin curtain with no seals leaks several times the energy code limit; an insulated curtain with interlock seals, guide weatherstrip, a bottom astragal, and a hood baffle meets it with margin. The field is left at the code limit where the door is a conditioned-envelope door, and carries no requirement at an unconditioned or interior opening. {note}
+
+# Fire-Rated Doors and Counter Shutters {toc}
+
+## The Listed Assembly {toc}
+
+### A rolling fire door is listed as an assembly: the curtain, the guides, the brackets, the hood, the release device, the governor, the reset mechanism, and, on a powered door, the operator and the sensing edge, tested together at a stated size in a stated wall construction. The listing is for a rating period, a maximum width and height, and a set of wall constructions, and the door holds its rating only when each of those is matched at the opening. {note}
+
+### Every fire-rated door shall be listed by a nationally recognized testing laboratory on the basis of testing to NFPA 252 or UL 10B, in the construction, size, and wall construction to be furnished.
+
+### Every fire-rated door shall bear a permanent label applied at the factory under the listing laboratory's program, identifying the rating period and the test standard.
+
+### Labels shall not be removed, painted over, covered, or defaced, and a label shall not be field applied or transferred between doors.
+
+### The wall construction at each fire-rated door shall be as indicated on [[drawing: the wall types on the drawings]], and the door furnished shall be listed for that construction.
+
+### A fire door listed for installation on a masonry or concrete wall is not thereby listed for a steel stud and gypsum board wall. The gypsum board wall needs a listing that names it, with the stud reinforcement and the fastening the listing shows, and a gypsum board wall built before the listing is read often lacks the reinforcement. {note}
+
+### The Contractor shall not field modify a listed fire door, including cutting the curtain, changing the guide fastening, or substituting a release or operator component, without the written confirmation of the listing laboratory that the modification is within the listing.
+
+## Fire-Protection Rating {toc}
+
+### The fire-protection rating of the door at each opening shall be as indicated in the datasheet.
+
+```datasheet
+label: Fire-Protection Rating of the Door
+type: range
+unit: min
+drawing_ref: "the door schedule"
+min: 0
+max: 240
+setpoints: [0, 20, 45, 60, 90, 180, 240]
+default: deferred
+```
+
+### A rating of 0 minutes designates an opening that the building code does not require to be an opening protective. Rolling fire doors are labeled at 3/4 hour, 1-1/2 hours, 3 hours, and 4 hours, and a door labeled for a longer period satisfies a shorter requirement; a 1-1/2 hour door is furnished where the code calls for 1 hour. The 20-minute and 3/4-hour counter shutters serve corridor and service counter openings in fire partitions. {note}
+
+### The Architect shall establish the required rating period for each opening from the opening protective provisions of [[parameter: adopted-building-code]] for the wall the door occupies, and shall record it on the door schedule.
+
+## Release {toc}
+
+### Every fire-rated door shall close automatically on release, and the means of release shall be as indicated in the datasheet.
+
+```datasheet
+label: Fire Door Release Means
+type: radio
+options:
+ - "Fusible link"
+ - "Electrical release on a fire alarm or detector signal, with a fusible link as backup"
+```
+
+### A fusible link releases when the air at the link reaches its rated temperature, which at a high lintel is late in a fire and after smoke has filled the opening. An electrical release closes the door when the fire alarm system or a detector at the opening signals, before the heat arrives, and keeps the link as the backup the listing requires. The electrical release is selected wherever the building has a fire alarm system that can signal the opening, and the link alone where it has none. {note}
+
+### Fusible links shall be listed under UL 33 and rated at 165°F, unless a higher temperature rating is indicated on [[drawing: the door schedule]] for an opening above a heat-producing process.
+
+### The behavior of an electrical release on loss of its power shall be as indicated in the datasheet.
+
+```datasheet
+label: Electrical Release on Loss of Power
+type: radio
+options:
+ - "Fail-safe, the door closes on loss of power to the release"
+ - "Fail-secure, the door holds open on loss of power and closes on signal or by the fusible link"
+```
+
+### A fail-safe release closes every fire door in the building when its circuit loses power, which is the behavior a life safety reviewer expects and the behavior that drops doors across a warehouse during a power outage. A fail-secure release holds through an outage and relies on the signal and the link, which keeps the openings usable during the outage and leaves the door open if the signal circuit has also failed. The choice follows how the fire alarm system powers and supervises the release circuit under [[sync/fire-alarm-systems]]. {note}
+
+### The release signal to an electrically released door shall come from the fire alarm system through an output interface furnished and supervised under [[sync/fire-alarm-systems]], and this standard shall furnish the release device at the door that the interface operates.
+
+### A door released by a detector at the opening shall be released by detectors on both sides of the wall, and the detectors shall be furnished and connected under [[sync/fire-alarm-systems]].
+
+## Governed Closing {toc}
+
+### On release, the curtain shall descend by gravity under the control of a speed governor at an average closing speed of not less than 6 in./s and not more than 24 in./s, as NFPA 80 requires, and shall come to rest with the bottom bar fully closed.
+
+### A door that falls free hits the floor hard enough to deform the bottom bar and bounce open, and a door that creeps leaves the opening unprotected while the fire grows. The governor holds the descent inside the band NFPA 80 sets, and it is a listed component of the assembly. {note}
+
+### Where a fire-rated door closes across a path people cross, it shall be furnished with an audible and a visible warning that sounds for a settable delay before the curtain starts to descend, and the delay shall not exceed the limit the listing states.
+
+### A powered fire-rated door shall close under gravity and the governor when released, and the operator shall disengage or free-wheel so that the release does not depend on power.
+
+## Reset {toc}
+
+### The method by which a released door is reset shall be as indicated in the datasheet.
+
+```datasheet
+label: Fire Door Reset Method
+type: radio
+options:
+ - "Manual reset at the door by a technician"
+ - "Reset from floor level by a control or by the operator"
+```
+
+### A manually reset door is reset from a ladder at the bracket, by a technician who re-tensions and re-engages the release, which on a high lintel is a service call after every alarm and every annual test. A floor-level reset lets the Owner's staff reset the door from a control station or by running the operator, so the annual test and a false alarm cost minutes, and it is selected where the doors are many or the lintels high; it carries a higher first cost and a release mechanism the listing must cover. {note}
+
+### A powered fire-rated door shall not reset until the fire alarm interface has returned to its normal state.
+
+### After the fusible link has released, the door shall be reset only after a new link of the same listing and rating is installed.
+
+## Smoke and Draft Control {toc}
+
+### Whether a smoke and draft control listing is required at each fire-rated door shall be as indicated in the datasheet.
+
+```datasheet
+label: Smoke and Draft Control Listing
+type: radio
+drawing_ref: "the door schedule"
+options:
+ - "Smoke and draft control listing required at this opening"
+ - "Smoke and draft control listing not required at this opening"
+default: deferred
+```
+
+### Doors at openings requiring smoke and draft control shall be part of an assembly complying with NFPA 105, listed on the basis of air leakage testing to UL 1784 at an air leakage not exceeding 3.0 cfm/ft² of opening at a pressure difference of 0.10 in. of water, and shall bear the S label.
+
+### The smoke test is not a fire test. A rolling door passes it with the gasketing and the bottom seal of its listing in place, and a door furnished without those seals holds its fire rating and fails as a smoke barrier. The building code requires the S label at corridor openings and at smoke barriers, and the door schedule carries the requirement opening by opening. {note}
+
+# Cycle Life {toc}
+
+## The counterbalance of each door shall be rated by the manufacturer for not less than the number of operating cycles indicated in the datasheet, one cycle being one full opening and closing.
+
+```datasheet
+label: Counterbalance Cycle Life
+type: range
+unit: cycles
+min: 10000
+max: 1000000
+setpoints: [10000, 20000, 50000, 100000, 200000, 300000, 500000, 1000000]
+default: 20000
+```
+
+## The spring is the component with a finite life. The standard counterbalance on a service door is rated at about 20,000 cycles, which is twenty years at three cycles a day and two years at thirty. A dock door at a distribution center, a parking door, or a counter door at a busy service window runs past the standard spring in a few years, and the higher ratings buy a heavier spring, a larger barrel, or, at the top of the range, a springless direct-drive design. A fire-rated door at a wall opening may cycle only at its annual test. {note}
+
+## The operator of a powered door shall be rated by its manufacturer for the cycle life selected and for the duty, in cycles per hour, that cycle life implies at the opening.
+
+# Curtain {toc}
+
+## Slat Construction {toc}
+
+### The curtain shall be an assembly of roll-formed or extruded interlocking slats of the construction indicated in the datasheet.
+
+```datasheet
+label: Curtain Slat Construction
+type: select
+options:
+ - "Curved slat, single skin"
+ - "Flat slat, single skin"
+ - "Flat slat, insulated double skin"
+```
+
+### A curved slat has the deepest section for its gauge, which is what lets it span a wide opening at a given wind pressure in the lightest steel, and it is the slat of an industrial service door. A flat slat reads as a flat surface when closed and is selected where the door is seen from a public side or where a counter shutter sits in a finished wall; it spans less at the same gauge. An insulated slat is a flat slat of two skins over a foamed or fibrous core, which is the construction a conditioned opening or a sound-sensitive opening takes, at roughly twice the curtain weight of a single-skin flat slat. {note}
+
+### The insulation core of an insulated curtain shall be as indicated in the datasheet.
+
+```datasheet
+label: Insulated Slat Core
+type: select
+options:
+ - "Polyurethane foamed in place"
+ - "Mineral fiber"
+ - "Polystyrene"
+```
+
+### Foamed-in-place polyurethane bonds to both skins, gives the highest thermal resistance per inch, and is the core of nearly every insulated service door. Mineral fiber is the core of insulated fire-rated doors, where a listed curtain cannot carry a foam plastic, and it adds sound absorption at a lower thermal value. Polystyrene is a lower-cost board core fitted into a slat, found in some counter doors and light service doors. {note}
+
+### Insulated fire-rated doors shall be furnished with the core the listing names, and the datasheet selection above shall not override it.
+
+## Slat Material {toc}
+
+### The slat material shall be as indicated in the datasheet.
+
+```datasheet
+label: Curtain Slat Material
+type: select
+options:
+ - "Galvanized steel"
+ - "Stainless steel"
+ - "Aluminum"
+default: "Galvanized steel"
+```
+
+### Galvanized steel is the slat of most service and fire doors, carries the highest strength per dollar, and takes the factory finishes the Finishes section describes. Stainless steel is selected for washdown, food processing, coastal, and clean environments and for an architectural exposure where the brushed surface is the finish. Aluminum is lighter, which lets a counter door or a wide service door run on a smaller counterbalance and operator, resists atmospheric corrosion without a coating, and is the slat of most counter doors; it dents more easily than steel of the same gauge. {note}
+
+### Galvanized steel slats shall be formed from steel sheet conforming to ASTM A653/A653M with a zinc coating designation of not less than G90.
+
+### Stainless steel slats shall be formed from sheet conforming to ASTM A666 in the grade indicated in the datasheet.
+
+```datasheet
+label: Stainless Steel Grade
+type: radio
+options:
+ - "Type 304"
+ - "Type 316"
+default: "Type 304"
+```
+
+### Type 304 serves washdown, food service, and ordinary coastal exposure. Type 316 adds molybdenum, which resists the pitting that chlorides cause, and is selected within a few hundred yards of surf, at a pool, or where the wash chemistry carries chloride. {note}
+
+### Aluminum slats shall be extruded from alloy conforming to ASTM B221 or formed from sheet conforming to ASTM B209, in a temper the manufacturer rates for the opening width at the design pressure.
+
+## Slat Gauge {toc}
+
+### Steel slats shall be of a gauge not lighter than indicated in the datasheet, which follows from the opening width and the design wind pressure under the compliance basis selected in the Wind Load and Windborne Debris section.
+
+```datasheet
+label: Steel Slat Gauge
+type: select
+derived: "the opening width and the design wind pressure, per the wind-load compliance basis"
+options:
+ - "24 gauge"
+ - "22 gauge"
+ - "20 gauge"
+ - "18 gauge"
+default: derived
+```
+
+### Gauge follows the span and the pressure, which is why it is derived rather than chosen. A 22-gauge curved slat carries an ordinary commercial opening at an ordinary pressure; a wide opening at a corner-zone pressure moves to 20 or 18 gauge, or adds windlocks instead. A heavier gauge than the span requires is selected only where the curtain will be struck by forklift traffic or carts, and that choice is written into the field as a concrete value. {note}
+
+### Stainless steel and aluminum slats shall be of the thickness the manufacturer rates for the opening width at the design pressure, and not thinner than the thickness of its listed construction at a fire-rated door.
+
+## Endlocks and Windlocks {toc}
+
+### Each slat shall be fitted at both ends with endlocks that hold the slats in alignment, prevent lateral movement of the slats in the curtain, and act as wearing surfaces in the guides.
+
+### Windlocks shall be fitted to the slat ends at the spacing the wind-load compliance basis requires where the design pressure exceeds the capacity of the plain slat in the guide.
+
+### Endlocks on fire-rated doors shall be of the material and pattern the listing names, and shall be of steel or iron, not of a plastic that softens in the test exposure.
+
+## Vision {toc}
+
+### Vision through the curtain shall be as indicated in the datasheet.
+
+```datasheet
+label: Curtain Vision
+type: select
+options:
+ - "None, solid curtain"
+ - "Perforated slats over a designated area of the curtain"
+ - "Fenestrated slats, open"
+ - "Fenestrated slats with glazed inserts"
+default: "None, solid curtain"
+```
+
+### A solid curtain is the service door and the fire door. Perforated slats pass light and air through small holes over a band or the full curtain, which lets a closed storefront or parking door stay visible and ventilated while keeping an opaque appearance from a distance. Fenestrated slats carry punched rectangular openings; left open they ventilate, and with polymer inserts they give a view through a closed door while keeping out weather and hands. Vision slats reduce the wind-load rating of the curtain and are confirmed against the compliance basis for the opening. {note}
+
+### The extent and location of vision slats within each curtain shall be as indicated on [[drawing: the door elevations]].
+
+### The material of glazed inserts shall be as indicated in the datasheet.
+
+```datasheet
+label: Glazed Insert Material
+type: radio
+options:
+ - "Clear polycarbonate"
+ - "Clear acrylic"
+default: "Clear polycarbonate"
+```
+
+### Polycarbonate takes impact without breaking and is the insert most manufacturers fit; it yellows under years of sun unless coated. Acrylic is clearer and holds its color but cracks under impact, and is selected at an interior opening or a counter shutter where the insert will not be struck. Glass is not fitted to a coiling curtain, because the slat flexes as it coils. {note}
+
+### Vision slats and glazed inserts shall not be furnished in a fire-rated door unless the listing covers them.
+
+# Bottom Bar {toc}
+
+## The bottom bar shall be a pair of structural angles, an extruded tube, or an extruded section, of the slat material, that stiffens the lower edge of the curtain, carries the weatherseal and the lock, and seats on the sill in the closed position.
+
+## Steel bottom bars shall be of angles conforming to ASTM A36/A36M, galvanized or finished to match the curtain, and aluminum and stainless steel bottom bars shall be of the alloy and grade of the curtain.
+
+## The bottom bar on a powered door shall carry the sensing edge the Operation section of this standard requires, and shall be fitted with the sensing edge's connection, by coil cord, take-up reel, or wireless transmitter, as the operator manufacturer's listing permits.
+
+## The bottom bar on a fire-rated door shall be the bottom bar of the listing.
+
+## The bottom bar shall be fitted with lifting handles on a push-up door, and with the lock housings the Locking section requires.
+
+# Guides {toc}
+
+## Guides shall be formed from structural steel angles conforming to ASTM A36/A36M not less than 3/16 in. thick, or from extruded aluminum or formed stainless steel of the curtain material, and shall retain the curtain under the design wind pressure in both directions.
+
+## Guides at a door whose curtain is stainless steel or aluminum shall be of the curtain material.
+
+## Guides shall be fastened to the jambs with fasteners of the type, size, and spacing the wind-load compliance basis and, at a fire-rated door, the listing require.
+
+## Guides shall be of a depth that retains the windlocks under the design pressure where windlocks are furnished, and shall be fitted with a removable stop at the top that keeps the curtain from leaving the guides when the door overruns.
+
+## Guides at a fire-rated door shall allow the thermal expansion of the curtain the listing provides for, and shall be fitted with the bottom bar retainer or the fire-door guide the listing names.
+
+## Guides shall be prepared to receive the guide weatherstrip the Weatherseals section selects, with the weatherstrip replaceable without removing the guide.
+
+## A guide is three angles bolted into a channel: the wall angle that anchors to the jamb, and the inner and outer angles that form the slot the curtain runs in. The slot depth sets how much curtain the wind can pull before the slat ends leave the guide, and a windlock engages a lip inside the slot; the guide depth, the angle thickness, and the fastener spacing are all in the wind-load rating, which is why they are furnished to that basis and not to a standard section. {note}
+
+# Brackets, Barrel, and Counterbalance {toc}
+
+## Brackets {toc}
+
+### Brackets shall be steel plates not less than 3/16 in. thick, or the thickness the manufacturer rates for the barrel load, that carry the barrel and the counterbalance at each end, close the ends of the hood, and transfer the curtain weight and the wind reaction to the jambs or the wall above the head.
+
+### The drive bracket shall carry a sealed or grease-packed bearing for the barrel, and the operator bracket shall be reinforced for the operator mounting selected.
+
+### Brackets on a fire-rated door shall be of the thickness and the pattern the listing names and shall carry the release, governor, and reset devices of the listing.
+
+## Barrel {toc}
+
+### The barrel shall be a steel pipe or tube of a diameter and wall thickness such that its deflection under the full curtain load does not exceed 0.03 in. per foot of opening width.
+
+### The barrel shall carry spring anchor plugs and a curtain attachment that transmit the spring torque to the curtain without slip.
+
+### Barrel deflection is what makes a wide door sag at mid-span and drag in the guides, and it is the quantity the manufacturer sizes the barrel to. The limit above holds the curtain straight across the widest door the standard covers. {note}
+
+## Counterbalance {toc}
+
+### The counterbalance shall be one or more oil-tempered helical torsion springs inside the barrel, grease packed, on a steel torsion shaft, that balance the curtain weight through its full travel so that the curtain stays at any position when released on a manual door and presents the operator with the residual load it is rated for on a powered door.
+
+### The counterbalance shall be adjustable in the field by an external adjusting wheel or tension device at the bracket, without removing the curtain or the hood.
+
+### Springs shall be rated for the cycle life selected in the Cycle Life section of this standard.
+
+### A manual push-up door shall be balanced so that the force to start the curtain in either direction does not exceed 25 lbf at the bottom bar.
+
+### A torsion spring stores the weight of the curtain, and an installer who releases the adjusting wheel without a holding bar is struck by it. The external adjustment keeps re-tensioning a bracket-side operation rather than a disassembly, and the installer qualification clause is where that hazard is managed. {note}
+
+# Hood {toc}
+
+## A sheet metal hood shall enclose the coiled curtain and the barrel, and shall be of the slat material and the finish of the curtain, of not less than 24 gauge steel, 0.032 in. aluminum, or 24 gauge stainless steel.
+
+## The hood profile shall be as indicated in the datasheet.
+
+```datasheet
+label: Hood Profile
+type: radio
+options:
+ - "Round"
+ - "Square"
+default: "Round"
+```
+
+## A round hood follows the coil and is the manufacturer's standard; a square hood presents a flat face and square edges to a finished ceiling or a storefront, at a larger projection and a higher cost. {note}
+
+## The hood shall be fitted with an intermediate support bracket at every span over 16 ft or at the span the manufacturer's rating requires, and shall be removable for service without removing the brackets.
+
+## The hood on a fire-rated door shall be of the type and gauge the listing names and shall be fitted with the flame baffle the listing shows.
+
+## Where the door is mounted on the exterior face of a wall or between jambs with the coil exposed to weather, the hood shall be fitted with a weather baffle or a hood cap that keeps water out of the coil.
+
+# Weatherseals {toc}
+
+## Doors at exterior openings and doors closing the conditioned envelope shall be furnished with the weatherseals indicated in the datasheet.
+
+```datasheet
+label: Weatherseals Furnished
+type: checkbox
+options:
+ - "Bottom bar astragal"
+ - "Guide weatherstrip at each jamb"
+ - "Hood baffle or lintel seal at the head"
+ - "Slat interlock seals"
+default:
+ - "Bottom bar astragal"
+```
+
+## The bottom astragal is a replaceable vinyl or neoprene bulb or blade on the bottom bar that closes the gap to an uneven floor and is the one seal nearly every exterior door carries. Guide weatherstrip is a replaceable pile or vinyl strip in the guide that seals the slat ends and quiets the curtain. A hood baffle is a flexible sheet between the hood and the lintel that closes the gap over the coil, which is the largest single leakage path on a door with no baffle. Interlock seals are a vinyl or neoprene insert between slats, furnished on insulated curtains, and they are what brings a door inside the energy code leakage limit. A dry interior service door carries none of them. {note}
+
+## The weatherseal set at a door closing the conditioned envelope shall be the set that achieved the air leakage rate selected in the Thermal Performance and Air Leakage section in the manufacturer's test.
+
+## Weatherseals shall be replaceable without removing the curtain, the hood, or the guides.
+
+# Locking {toc}
+
+## The locking of each door shall be as indicated in the datasheet.
+
+```datasheet
+label: Locking
+type: select
+options:
+ - "No lock, the curtain held closed by the operator brake"
+ - "Slide bolts on the bottom bar, interior side"
+ - "Slide bolts on the bottom bar with a padlock provision"
+ - "Cylinder lock in the bottom bar, operable from both sides"
+ - "Cylinder lock in the bottom bar, operable from the exterior side"
+ - "Electric interlock lock on the powered door"
+```
+
+## A powered door is held closed by the operator brake, and a bolt on it is an invitation to run the operator against the bolt, which is why a powered door is locked only by an electric interlock that disables the operator while the lock is engaged. A manual door is held by slide bolts engaging the guides, with a padlock where the Owner wants to lock it from the outside with its own padlock, or by a cylinder lock where a key fits the Owner's key system. A cylinder operable from the exterior only is the storefront and counter door lock; one operable from both sides serves a door that is secured from either side. {note}
+
+## Slide bolts shall engage slots in both guides, and shall be of the bottom bar material.
+
+## Cylinders shall accept the cylinder format and keyway of the project keying system and shall be keyed into the keying schedule prepared under [[sync/door-hardware]].
+
+## An electric interlock lock shall be monitored by the operator so that the operator cannot run while the lock is engaged, and shall release on the fire door release where the door is fire rated.
+
+## A fire-rated door shall not be furnished with a lock that prevents it from closing fully on release.
+
+# Counter Doors and Counter Shutters {toc}
+
+## A counter door is a coiling door built for an opening over a counter or a pass-through, with a smaller barrel and guide, a flat slat, a hood above the head, and a bottom bar that seats on a sill or a countertop. A counter shutter is the same product listed as a fire-protection-rated opening protective, labeled at 20 minutes or 3/4 hour for a corridor or a service counter in a fire partition. The slat, material, finish, locking, and operation decisions of the sections above apply to counter doors; this section carries the decisions particular to them. {note}
+
+## The sill arrangement of counter doors shall be as indicated in the datasheet.
+
+```datasheet
+label: Counter Door Sill
+type: radio
+options:
+ - "Integral stainless steel sill furnished with the door"
+ - "No sill, the bottom bar seats on the countertop furnished by others"
+```
+
+## An integral stainless sill gives the bottom bar a flat, hard, cleanable seat and is the arrangement of a food service or pharmacy counter where the countertop is laminate or solid surface that a bottom bar would mark. Seating on the countertop is selected where the counter is stone or stainless, or where the opening has no counter and the bottom bar seats on a stool. A fire-rated counter shutter seats on the sill the listing names. {note}
+
+## The frame arrangement of counter doors shall be as indicated in the datasheet.
+
+```datasheet
+label: Counter Door Frame
+type: radio
+options:
+ - "Guides mounted directly to the jambs"
+ - "Integral tubular frame with jambs, head, and sill as one unit"
+```
+
+## Guides bolted to a finished jamb suit a masonry or a hollow metal framed opening that is plumb and square. An integral tube frame carries the guides, the head, and the sill as one factory unit that is set into a gypsum board partition and finished to, which gives a square opening in a stud wall and lets the frame be finished with the curtain; it adds depth to the jamb and cost to the unit. {note}
+
+## Counter shutters shall be listed as fire-protection-rated assemblies with the frame, sill, and wall construction of the listing, and shall meet the release, closing, and reset requirements of the Fire-Rated Doors and Counter Shutters section of this standard.
+
+## A counter door across an accessible service counter shall be furnished so that, in the open position, the bottom bar clears the counter height the accessibility provisions of [[parameter: adopted-building-code]] set for that counter.
+
+# Operation {toc}
+
+## Means of Operation {toc}
+
+### The means of operation of each door shall be as indicated in the datasheet.
+
+```datasheet
+label: Means of Operation
+type: select
+options:
+ - "Manual push-up"
+ - "Manual chain hoist"
+ - "Manual hand crank"
+ - "Motor operator"
+```
+
+### Push-up suits a small, well-balanced curtain that one person lifts by the handles, and a counter door is the usual case. A chain hoist runs a hand chain through a reduction gear at the bracket, which moves a large curtain by hand at a pull an adult can sustain, and it is the manual means of a service door. A hand crank turns a removable crank at the bracket or through the wall, which is selected where a hanging chain cannot be allowed, as at a counter in a public corridor or a door whose coil side is unreachable. A motor operator is selected for frequent use, for a curtain too heavy to move by hand, for remote or interlocked control, and for every door the dock interlock or the access system has to drive. {note}
+
+### The force on the hand chain of a chain hoist required to start the balanced curtain shall not exceed 35 lbf.
+
+### Chain hoists shall be fitted with a chain keeper at the jamb that holds the hand chain clear of the opening when the door is at rest.
+
+## Motor Operator {toc}
+
+### Requirements in this article apply to doors for which a motor operator is selected.
+
+### The operator shall be a commercial door operator listed under ANSI/UL 325 for the door type, with a motor sized by the operator manufacturer for the balanced curtain load and the cycle life selected, thermal overload protection, an electromechanical brake that holds the curtain at any position, a gear reduction, adjustable open and close limits, and a manual disconnect to emergency manual operation.
+
+### The operator mounting shall be as indicated in the datasheet.
+
+```datasheet
+label: Operator Mounting
+type: select
+options:
+ - "Wall mounted beside the bracket, driving the barrel by chain or gear"
+ - "Bracket mounted on the end bracket plate"
+ - "Hood mounted above the coil"
+ - "Tube motor inside the barrel"
+```
+
+### A wall-mounted operator sits on the jamb wall beside the bracket and needs sideroom there; it is the most accessible for service and the mounting most service doors take. A bracket-mounted operator bolts to the bracket plate, which saves wall space where the sideroom is the bracket alone. A hood-mounted operator sits on top of the coil, which is selected where there is headroom and no sideroom. A tube motor runs inside the barrel and shows nothing outside the hood, which is the mounting of a counter door, a storefront, and a low-headroom opening, at a lower torque and duty than an external operator. {note}
+
+### The operator and the control station shall be located as indicated on [[drawing: the door schedule and the electrical drawings]], and the Contractor shall confirm the locations against the as-built sideroom and headroom before rough-in.
+
+### The operator supply voltage and phase shall be as indicated in the datasheet.
+
+```datasheet
+label: Operator Supply Voltage and Phase
+type: select
+drawing_ref: "the electrical drawings"
+options:
+ - "115 V, 1Φ"
+ - "208 V, 1Φ"
+ - "230 V, 1Φ"
+ - "208 V, 3Φ"
+ - "230 V, 3Φ"
+ - "460 V, 3Φ"
+ - "575 V, 3Φ"
+default: deferred
+```
+
+### The branch circuit, the raceway, and the disconnecting means within sight of the operator that NFPA 70 requires shall be furnished under [[sync/conductors-and-cables]] and [[sync/raceways-and-conduit]], and the operator, the control station, the entrapment protection devices, and the low-voltage wiring between them shall be furnished under this standard.
+
+## Enclosure Type {toc}
+
+### The operator, its control enclosure, and the control station shall be in enclosures of the NEMA 250 type indicated in the datasheet, and the type shall be marked on each enclosure.
+
+```datasheet
+label: Operator and Control Enclosure Type
+type: select
+options:
+ - "Type 1"
+ - "Type 3R"
+ - "Type 4"
+ - "Type 4X"
+ - "Type 12"
+default: "Type 1"
+```
+
+### The operator of a coiling door hangs on the inside face of the wall, above the opening, in the building, which is why the Type 1 enclosure of indoor electrical equipment is its norm. The harsher locations below each require a higher type, and the type is set once per project with those clauses raising it at the openings they describe. Type 3R sheds rain where the operator or a control station is outdoors; Type 4 is gasketed against hose-directed water for a wash bay or a food plant; Type 4X adds corrosion resistance for a coastal, salted, or chemical exposure; Type 12 keeps out dust and dripping oil in a dusty industrial interior. {note}
+
+### Operators and control stations mounted outdoors or on the exterior face of the wall shall be in enclosures rated not less than Type 3R.
+
+### Operators and control stations at openings exposed to washdown or hose-directed water shall be in enclosures rated not less than Type 4.
+
+### Operators and control stations at openings exposed to salt, chemical vapor, or de-icing salt, and at openings the Environmental and Service Conditions section identifies as corrosive, shall be in enclosures rated not less than Type 4X.
+
+### Operators and control stations in dusty industrial interiors shall be in enclosures rated not less than Type 12.
+
+### Enclosures shall comply with UL 50E for the type furnished.
+
+## Control Mode and Interfaces {toc}
+
+### The closing control mode of each powered door shall be as indicated in the datasheet.
+
+```datasheet
+label: Closing Control Mode
+type: radio
+options:
+ - "Momentary contact close, with monitored entrapment protection devices"
+ - "Constant-pressure close, with the control station in sight of the door"
+```
+
+### A momentary-contact close starts the curtain down on one press and runs it to the floor, which is what a timer, a vehicle loop, a dock interlock, or a remote needs; UL 325 permits it only with the monitored external entrapment protection the article below requires. A constant-pressure close runs the curtain down only while the button is held and stops when it is released, which needs no external device and puts a person at the station watching the opening for every close; it serves a door operated a few times a day by staff and cannot be closed by any automatic signal. {note}
+
+### Every powered door shall be furnished with a three-button control station providing open, close, and stop, mounted where the operator of the station can see the full travel of the curtain and is clear of it.
+
+### The control interfaces and accessories furnished with the powered doors shall be as indicated in the datasheet.
+
+```datasheet
+label: Control Interfaces and Accessories Furnished
+type: checkbox
+options:
+ - "Additional three-button station on the opposite side of the wall"
+ - "Key switch station"
+ - "Radio control with transmitters"
+ - "Vehicle loop detector"
+ - "Timer to close"
+ - "Dock interlock input from the loading dock equipment"
+ - "Access control or building system interface"
+ - "Fire alarm interface for a fire-rated door"
+ - "Audible and visible motion warning on close"
+```
+
+### A second station serves a door worked from both sides. A key switch keeps the control to keyholders at a storefront or an exterior face. Radio control lets a driver open a dock or parking door from the vehicle. A vehicle loop opens on approach or holds the door open while a vehicle sits in it. A timer closes a door left open, and it is what makes a conditioned dock door close itself. The dock interlock input lets the leveler and restraint system under [[sync/loading-dock-equipment]] prevent the door from closing on a leveler that is not stored. An access control interface opens on a credential, and the fire alarm interface is the release input a fire-rated door needs. Every automatic close is what the monitored entrapment protection exists for. {note}
+
+### Where a dock interlock input is furnished, the interlock sequence between the leveler, the restraint, and the door shall be as established under [[sync/loading-dock-equipment]], and this standard shall furnish the dry-contact input and the door position output the interlock requires.
+
+### Where a timer to close, a vehicle loop, or any other automatic close is furnished, the door shall be furnished with the audible and visible motion warning and the momentary-contact control mode with monitored entrapment protection.
+
+## Entrapment Protection {toc}
+
+### Powered doors shall comply with the edition of ANSI/UL 325 in force at the time of manufacture.
+
+### A powered door closing on momentary contact shall be protected at the closing edge by an inherent entrapment protection system in the operator and by not fewer than one external entrapment protection device that the operator monitors for presence and function on every cycle, and the operator shall stop and reverse the curtain when either acts.
+
+### The external entrapment protection devices furnished on each powered door shall be as indicated in the datasheet.
+
+```datasheet
+label: External Entrapment Protection Devices
+type: checkbox
+options:
+ - "Monitored sensing edge on the bottom bar"
+ - "Monitored photoelectric sensors across the opening"
+ - "Monitored light curtain across the opening"
+default:
+ - "Monitored sensing edge on the bottom bar"
+```
+
+### A sensing edge on the bottom bar reverses the curtain when it touches an obstruction and is the device nearly every rolling door carries, because it protects the whole width at the edge that does the harm. Photoelectric sensors across the opening near the floor reverse the curtain before contact when the beam is broken and are added where vehicles or carts stand in the opening; they see one height only. A light curtain covers a band of heights with many beams and is selected at a pedestrian or a high-traffic opening. The monitoring is what the listing requires: an operator that cannot confirm its device is connected and working will not close on momentary contact. {note}
+
+### On the loss or fault of a monitored device, the operator shall inhibit momentary-contact closing and shall permit closing only by constant pressure on the close control.
+
+### A door closing on constant pressure shall be arranged so that the curtain stops within 2 in. of travel when the close control is released.
+
+### On a powered fire-rated door, the entrapment protection devices shall not prevent the governed closing the Fire-Rated Doors and Counter Shutters section requires on release, and the sensing edge shall be a component of the fire door listing.
+
+## Emergency Manual Operation {toc}
+
+### Every powered door shall be furnished with the means of operation without power indicated in the datasheet.
+
+```datasheet
+label: Emergency Manual Operation of Powered Doors
+type: select
+options:
+ - "Auxiliary chain hoist at the operator"
+ - "Hand crank at the operator"
+ - "Floor-level disconnect to push-up"
+```
+
+### An auxiliary chain hoist moves any curtain the operator can and is the norm on a service door, with the chain hanging at the jamb. A hand crank is selected where a hanging chain is not acceptable or where the operator is through the wall. A floor-level disconnect releases the operator so a light curtain is pushed up by hand, which serves a counter door or a small storefront door and nothing heavier. {note}
+
+### The emergency manual operation shall be interlocked so that the operator cannot run while the manual means is engaged, and the interlock shall be monitored by the operator.
+
+### The manual means on a fire-rated door shall not prevent the door from closing on release.
+
+# Finishes {toc}
+
+## Steel Curtain and Hood Finish {toc}
+
+### The factory finish of galvanized steel slats, bottom bars, hoods, and guides shall be as indicated in the datasheet.
+
+```datasheet
+label: Steel Curtain and Hood Finish
+type: select
+options:
+ - "Mill galvanized, unpainted"
+ - "Factory baked-on primer for field finishing"
+ - "Factory baked-on polyester enamel from the stock color range"
+ - "Factory powder coat in a selected color"
+ - "Factory two-coat fluoropolymer finish in a selected color"
+```
+
+### Mill galvanized is the lowest cost and the finish of an unseen service door in a warehouse; it weathers to a dull gray and shows every scratch as a bright line. A baked-on primer leaves the color to the painting trade in the field and is selected where the door is to match field-painted adjacent work. A polyester enamel in the manufacturer's standard colors is the factory finish most doors ship with, at the manufacturer's palette. A powder coat in a selected color matches the door to a storefront or a wall color at a modest premium and gives the hardest ordinary film. A two-coat fluoropolymer finish holds its color and gloss under years of sun and is selected where the door is part of a facade with a fluoropolymer-finished panel or storefront, at the highest cost and the longest finish warranty. {note}
+
+### Factory finishes on steel shall be applied over the galvanized coating after a cleaning and pretreatment the coating manufacturer rates for zinc-coated steel.
+
+## Aluminum Curtain and Hood Finish {toc}
+
+### The factory finish of aluminum slats, bottom bars, hoods, and guides shall be as indicated in the datasheet.
+
+```datasheet
+label: Aluminum Curtain and Hood Finish
+type: select
+options:
+ - "Mill finish"
+ - "Clear anodized, AAMA 611 Class II"
+ - "Clear anodized, AAMA 611 Class I"
+ - "Color anodized, AAMA 611 Class I"
+ - "Powder coat, AAMA 2604"
+ - "Fluoropolymer, AAMA 2605"
+```
+
+### Mill-finish aluminum oxidizes to a gray that holds, and it serves an unseen interior counter door. A Class II anodic coating is the thinner architectural anodize and serves an interior opening; a Class I coating is the thicker exterior anodize that resists salt and weathering, in clear or in the integral colors the process offers. A powder coat to AAMA 2604 gives a wide color range with good exterior durability, and a fluoropolymer coating to AAMA 2605 gives the longest color and gloss retention for a facade door matched to curtain wall or storefront. {note}
+
+## Stainless Steel Curtain and Hood Finish {toc}
+
+### The surface finish of stainless steel slats, bottom bars, hoods, and guides shall be as indicated in the datasheet.
+
+```datasheet
+label: Stainless Steel Curtain and Hood Finish
+type: select
+options:
+ - "No. 2B mill finish"
+ - "No. 4 brushed finish"
+ - "No. 8 mirror finish"
+default: "No. 4 brushed finish"
+```
+
+### A No. 4 brushed finish hides handling marks, cleans well, and is the finish of a food service, pharmacy, or hospital counter door and of most stainless service doors. A 2B mill finish is the plain cold-rolled surface and serves a wash bay or a kitchen door whose appearance does not matter. A mirror finish is an architectural statement that shows every fingerprint and scratch and is selected where the design calls for it. {note}
+
+## Field Painting and Color {toc}
+
+### Where the factory primer finish is selected, the field finish over it shall be applied under [[sync/exterior-painting]] at exterior openings and [[sync/interior-painting]] at interior openings, and the primer shall be one the field coating manufacturer rates as a compatible substrate.
+
+### Factory finish colors shall be as indicated on [[drawing: the finish schedule]].
+
+### Guides and brackets shall be finished to match the curtain unless a different finish is indicated on [[drawing: the finish schedule]].
+
+# Installation {toc}
+
+## Opening Verification {toc}
+
+### Before any door is installed, the Contractor shall verify at each opening the width, the height, the plumb of the jambs, the level of the head and the sill, the headroom above the head, the sideroom at each jamb, and the substrate at every anchor location, against the shop drawings.
+
+### Where an opening does not provide the headroom, sideroom, or substrate the shop drawings require, the Contractor shall report the condition to the Architect in writing and shall not install the door until the condition is resolved.
+
+## Anchorage {toc}
+
+### Guides, brackets, and the operator shall be anchored to the structure with the fasteners, the embedment, and the spacing the wind-load compliance basis and, at a fire-rated door, the listing require, and the anchorage shall develop the wind reaction, the curtain weight, and the counterbalance reaction.
+
+### Anchorage into masonry shall be into the grouted cells, bond beams, or lintels furnished under [[sync/unit-masonry]] at the locations the shop drawings show, and anchorage into hollow unreinforced cells shall not be substituted for it.
+
+### Anchorage to structural steel shall be to the jamb and lintel members furnished under [[sync/structural-steel-framing]], and the Contractor shall coordinate any welded or drilled attachment with that work before erection.
+
+### Anchorage in a metal building system shall be to the jamb and header framing of the rough opening furnished under [[sync/metal-building-systems]], and the door reactions shall be furnished to the metal building manufacturer before that framing is designed.
+
+### Anchorage to a light-gauge framed jamb shall be to the built-up jamb studs or the steel reinforcement furnished under [[sync/cold-formed-metal-framing]], and shall not be to a single stud or to gypsum board.
+
+### The jamb carries the wind on the whole curtain through the guide fasteners, and the wall above the head carries the coil. A guide screwed to a single stud through gypsum board, or anchored into an ungrouted block cell, holds until the first design wind. The trade that builds the opening has to know the door reactions before it builds, which is what the pre-installation conference and the reaction submittal to the metal building manufacturer are for. {note}
+
+## Fire Door Installation {toc}
+
+### Fire-rated doors shall be installed in accordance with NFPA 80 and the listing, with the guides, brackets, hood, release, governor, reset, and bottom bar of the listing on the wall construction of the listing.
+
+### Where a fire-rated door is mounted on a gypsum board wall, the wall shall carry the stud reinforcement and the fastening the listing requires, and the Contractor shall confirm it is in place before the guides are set.
+
+### The joint between the guide, the bracket, or the hood and a fire-resistance-rated wall shall be closed with a fire-resistive joint system under [[sync/firestopping]] where the listing or the wall rating requires it.
+
+### The release device of an electrically released door shall be connected to the fire alarm interface and tested with the fire alarm installer before the acceptance test.
+
+## Perimeter Sealing {toc}
+
+### At exterior openings, the joint between the guides and the wall and between the hood and the wall shall be sealed with a sealant under [[sync/joint-sealants]], and the air barrier shall be carried to the guide under [[sync/air-barriers]], so that the opening is continuous with the wall's air and water control layers.
+
+### Where an insulated door closes the conditioned envelope, the perimeter insulation at the head and jambs shall be coordinated with [[sync/building-thermal-insulation]].
+
+## Adjustment {toc}
+
+### After installation, the Contractor shall cycle each door through its full travel, adjust the counterbalance so that a manual curtain stays at any position and moves within the force limits of this standard, set the operator limits so that the curtain stops at the open position without striking the stops and at the closed position with the bottom bar seated across the full width, and adjust the weatherseals to a continuous contact.
+
+### The Contractor shall lubricate the guides, the bearings, and the chain as the manufacturer's instructions state, and shall touch up damaged factory finish with the manufacturer's matching coating.
+
+# Field Quality Control {toc}
+
+## Operational Test {toc}
+
+### Every door shall be tested through its full travel, and the Contractor shall correct any binding, any slat misalignment, any curtain that leaves the guides, and any bottom bar that does not seat level before the door is accepted.
+
+### Every powered door shall be tested for open, close, and stop from every control station, for the function of every interface furnished, for the brake holding the curtain at mid-travel, and for emergency manual operation with the operator disconnected.
+
+## Entrapment Protection Test {toc}
+
+### Every powered door shall be tested with an obstruction at the closing edge to confirm that the sensing edge or the inherent system stops and reverses the curtain, with the beam of every photoelectric sensor or light curtain broken to confirm the same, and with each monitored device disconnected to confirm that the operator inhibits momentary-contact closing.
+
+### The Contractor shall record the result of each test by opening mark for the closeout submittals.
+
+## Fire Door Acceptance Test {toc}
+
+### Every fire-rated door shall be acceptance tested in accordance with NFPA 80 after installation, by the installer and in the presence of the Owner's representative, before the door is placed in service.
+
+### The door shall be released by each means of release furnished, shall close under the governor at an average speed within the limits this standard sets, and shall come to rest fully closed; the door shall then be reset and the test repeated to confirm the reset.
+
+### Where the fire alarm system releases the door, the release shall be tested from the fire alarm system under the acceptance test of [[sync/fire-alarm-systems]], and the two tests shall be recorded together.
+
+### The Contractor shall deliver the acceptance test record, signed by the installer, to the Owner with the closeout submittals.
+
+### The Contractor shall notify the Owner in writing that NFPA 80 requires every fire-rated door to be inspected and drop tested not less than annually by a qualified person for the life of the building, and that the records of those tests are to be retained for review by the authority having jurisdiction.
+
+### The annual test is the obligation most often lost at turnover. The door that closed at acceptance and was never dropped again sits for ten years on a link that has gathered paint and a governor that has dried out, and fails when it is needed. The written notice puts the obligation in the Owner's file in the Owner's name. {note}
+
+# Delivery, Storage, and Handling {toc}
+
+## Doors shall be delivered in the manufacturer's packaging, with each curtain, hood, guide set, and operator marked with its opening mark, and with the fire door labels protected.
+
+## Curtains shall be stored coiled, off the floor, under cover and out of standing water, and finished components shall be protected from abrasion, from contact with wet concrete or masonry cleaning compounds, and from welding spatter.
+
+## Operators, control stations, and entrapment protection devices shall be stored in a dry space until installed.
+
+## A coiled curtain left in a puddle for a week arrives at the opening with white rust between the slats, and a galvanized curtain splashed with muriatic acid during masonry cleaning loses its zinc there. The storage clause is cheaper than a replacement curtain. {note}
+
+# Warranty {toc}
+
+## The door manufacturer shall warrant the curtain, guides, brackets, barrel, counterbalance, and hood against defects in materials and workmanship, including slat deformation, spring failure within the rated cycle life, and finish failure by peeling or delamination, for not less than the period indicated in the datasheet from the date of substantial completion.
+
+```datasheet
+label: Door Warranty Period
+type: range
+unit: yr
+min: 1
+max: 10
+setpoints: [1, 2, 3, 5, 10]
+```
+
+## The operator manufacturer shall warrant the operator, its controls, and the entrapment protection devices against defects in materials and workmanship for not less than the period indicated in the datasheet from the date of substantial completion.
+
+```datasheet
+label: Operator Warranty Period
+type: range
+unit: yr
+min: 1
+max: 5
+setpoints: [1, 2, 3, 5]
+```
+
+## Where a powder coat or a fluoropolymer finish is selected, the finish shall be warranted against chalking, fading, and loss of film integrity beyond the coating standard's limits for not less than the period indicated in the datasheet.
+
+```datasheet
+label: Factory Finish Warranty Period
+type: range
+unit: yr
+min: 1
+max: 20
+setpoints: [1, 5, 10, 15, 20]
+```
+
+## Door manufacturers publish terms from one year to several years on the door and a longer term on a high-cycle counterbalance, operator manufacturers one to two years with longer terms on the motor, and finish suppliers up to twenty years on a fluoropolymer coating. No one term is the norm across those three components, which is why each field is set by the project. The datasheet period is the floor; a longer published term applies in addition and is not waived by it. {note}
+
+## A warranted replacement or repair shall carry a fresh warranty of the original period running from the date of the repair, or the unexpired remainder of the original period, whichever ends later.
+
+## Warranty service shall include the labor to remove, repair, adjust, and reinstall warranted components, and the Contractor shall bear the cost of repairing collateral damage to adjacent work caused by the repair.
+
+## The warranty shall not extend to damage from vehicle impact, from operation against an obstruction after a disabled entrapment protection device, or from field modification outside the manufacturer's written instructions.
+
+# Spare Parts {toc}
+
+## The Contractor shall deliver to the Owner before final acceptance the spare parts indicated in the datasheet, in labeled packaging identifying the opening marks they serve, against a signed receipt included in the closeout submittals.
+
+```datasheet
+label: Spare Parts Furnished
+type: checkbox
+options:
+ - "Fusible links of each rating furnished, two per fire-rated door"
+ - "Sensing edge of each type furnished, one per five powered doors"
+ - "Photoelectric sensor pair, one per five powered doors so equipped"
+ - "Bottom bar astragal stock, one door width per door type"
+ - "Guide weatherstrip stock, one door height per door type"
+ - "Control station of each type furnished, one"
+ - "Touch-up finish for each factory finish and color"
+default: []
+```
+
+## A fusible link is consumed by the heat that releases it, and a spare on hand is what gets a fire door reset the same day. A sensing edge is cut by a forklift and a photo eye is knocked off its bracket, and either one takes the door out of momentary operation until it is replaced. Seal stock and touch-up finish are the consumables the Owner's own staff fits. The quantities follow the door count and how far the Owner is from the nearest dealer. {note}