−---
−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
−
−This standard covers the furnishing, installation, and commissioning of overhead coiling doors and coiling closures in commercial, institutional, and industrial construction. The scope includes non-insulated and insulated coiling service doors, coiling counter doors and counter shutters, coiling grilles, and fire-rated coiling doors. 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.
−
−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. 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. 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. 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.
−
−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]]); with the electrical trade for power and control wiring to motor operators; with [[sync/fire-alarm-systems]] for release of fire-rated coiling doors on alarm or detector signal; and with [[sync/firestopping]] where the head and jamb conditions of a rated door penetrate or terminate at a rated wall.
−
−# Referenced Standards
−
−Materials, fabrication, testing, and installation shall comply with the latest adopted edition of the referenced standards. 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.
−
−| 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
−
−## Action Submittals
−
−The following submittals shall be submitted for review and returned before fabrication or procurement begins. 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.
−
−**Door Schedule:** A complete 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.
−
−**Shop Drawings:** Fabrication and installation 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. Drawings shall indicate the clearances the door requires so that the opening and the surrounding construction can be verified before fabrication.
−
−**Product Data:** Manufacturer's technical data for the curtain, finish system, weatherseals, operator, controls, and entrapment-protection devices.
−
−**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.
−
−**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.
−
−**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.
−
−```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"
−```
−
−## Closeout Submittals
−
−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
−
−## Manufacturer Qualifications
−
−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
−
−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
−
−```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.
−
−# Performance
−
−Coiling doors are engineered assemblies, and the most common in-service failures 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. The requirements in this section therefore stand independent of the catalog model and shall be satisfied for the specific opening.
−
−## Wind Load
−
−### Design Wind Pressure
−
−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.
−
−```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
−```
−
−### Structural Test Method
−
−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.
−
−```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"
−```
−
−### Windborne-Debris Resistance
−
−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.
−
−```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"
−```
−
−## Air Infiltration
−
−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.
−
−```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
−```
−
−## Fire Rating
−
−### Required Rating
−
−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.
−
−```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"
−```
−
−### Test Standard and Labeling
−
−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 are tested and listed as components of the rolling steel fire-door assembly under UL 10B.
−
−### Release, Closing, and Reset
−
−```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
−
−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. Specify the duty class so that the counterbalance, guides, and operator are sized for the service.
−
−```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"
−```
−
−## Thermal Performance (Insulated Doors)
−
−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.
−
−```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
−```
−
−# Door Assembly
−
−## Door Type
−
−```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
−
−### Slat Profile
−
−The curtain shall consist of roll-formed interlocking slats. 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. The selected profile shall be confirmed against the opening size and the design wind pressure, because slat stiffness contributes to the door's resistance to wind.
−
−```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"
−```
−
−### Curtain Material
−
−```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.
−
−### Slat 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 below covers typical commercial service-door openings.
−
−```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"
−```
−
−### Windlocks
−
−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.
−
−```datasheet
−label: Windlocks
−type: radio
−options:
− - "Not required at design pressure"
− - "Provided as required by wind-load listing"
−default: "Not required at design pressure"
−```
−
−## Hood
−
−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.
−
−```datasheet
−label: Hood Material
−type: radio
−options:
− - "Galvanized steel"
− - "Aluminum"
− - "Stainless steel"
−default: "Galvanized steel"
−```
−
−## Guides
−
−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
−
−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
−
−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 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
−
−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
−
−## Operation Type
−
−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.
−
−```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)"
−```
−
−## Motor Operator Controls
−
−```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
−
−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, and 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.
−
−```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)"
−```
−
−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
−
−```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"
−```
−
−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
−
−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.
−
−```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)"
−```
−
−# Installation
−
−The opening shall be verified before installation begins: width, height, plumb of the jambs, level of the head and sill, and — critically — 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. 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.
−
−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.
−
−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]].
−
−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
−
−## Operational Test
−
−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
−
−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
−
−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.
−
−```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)"
−```
−
−# Warranty
−
−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.
−
−```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
+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 {toc}
+
+## 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. {note}
+
+### 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. {note}
+
+# 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"
+```