+---
+title: Flush Wood Doors
+category: Architectural / Openings
+toc_depth: 3
+description: >
+ When to use: Selection, factory fabrication, delivery, installation, and acceptance of factory-built architectural flush-panel wood doors for interior and select rated exterior openings in commercial, institutional, educational, healthcare, and multi-family residential work. Covers hollow-core, solid-core, and fire-rated solid-core flush slabs with wood-veneer, high-pressure laminate (HPL), or factory-applied opaque faces, including factory edge banding, astragals, and sound seals integral to the leaf.
+ Not intended for: Hollow metal and steel door slabs, frames, bucks, and door hardware (see [[sync/doors-frames-and-hardware]]); fire-rated glazing inserts, lites, and borrowed lights (see [[sync/fire-rated-glazing]]); stile-and-rail wood doors (panel, French, louvered); overhead coiling and rolling doors (see [[sync/overhead-coiling-doors]]); casing, trim, and finish carpentry at openings (see [[sync/finish-carpentry]]); and windows, skylights, or roof hatches.
+---
+
+# Scope {toc}
+
+## This standard covers factory-built architectural flush-panel wood doors furnished as complete door leaves for interior openings, and for select rated exterior openings where an exterior-listed flush wood door is specified.
+
+## The work includes hollow-core, solid-core, and fire-rated solid-core flush slabs with wood-veneer, high-pressure laminate, or factory-applied opaque faces, in standard, oversized, and custom widths.
+
+## The work includes any factory-applied edge banding, astragals, meeting-edge seals, and sound seals that are integral to the door leaf itself.
+
+## This standard governs the complete door slab from selection through factory fabrication, site delivery, installation, and acceptance. {note}
+
+## Flush wood doors are an assembly product: the slab performance the Owner pays for is delivered only when the frame, the hardware, and the wall opening are coordinated with the leaf; this standard fixes the leaf and depends on the companion standards named below to complete the rated, acoustic, or operational assembly. {note}
+
+## The door frame, hollow metal and wood bucks, and door hardware are excluded and are coordinated under [[sync/doors-frames-and-hardware]]. {note}
+
+## A flush wood leaf installed in a non-rated or mis-listed frame voids the fire-door listing of the whole assembly; the frame and hardware are specified together with the steel-door assembly so that label, clearances, and preparations are reconciled in one schedule. {note}
+
+## Fire-rated glazing inserts, vision lites, and borrowed-light sidelites are excluded and are covered under [[sync/fire-rated-glazing]]. {note}
+
+## The lite kit, its glazing, and the glazing stops carry their own fire test and label; this standard sizes and locates the cutout in the leaf and coordinates the labeled lite kit, but the glazing product itself is specified elsewhere. {note}
+
+## Stile-and-rail wood doors, including panel, French, and louvered doors, are a distinct product type and are excluded. {note}
+
+## Stile-and-rail construction is governed by ANSI/WDMA I.S.6A and uses different joinery, grading, and fire-listing rules; only flush-panel construction is covered here. {note}
+
+## Overhead coiling and rolling doors are excluded and are covered under [[sync/overhead-coiling-doors]]. {note}
+
+## Casing, jamb trim, and finish carpentry at door openings are excluded and are covered under [[sync/finish-carpentry]]. {note}
+
+# Referenced Standards {toc}
+
+## Products 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 Engineer of Record or Architect of Record directs otherwise in writing.
+
+## Fire-rated doors shall comply with the edition of the test standard and installation code referenced by the listing under which the door is labeled.
+
+## A labeled fire door carries the edition of UL 10C, NFPA 80, and the IBC in force when it was tested and listed; specifying a later edition of NFPA 80 does not re-qualify an older label — the listing edition governs the door, and the adopted code edition governs the project requirement for what rating must be present. {note}
+
+| Standard | Title |
+|----------|-------|
+| ANSI/WDMA I.S.1A | Industry Standard for Architectural Wood Flush Doors |
+| AWI/AWMAC/WI AWS | Architectural Woodwork Standards (Section 9, Doors) |
+| ANSI A208.1 | Particleboard |
+| HPVA HP-1 | Standard for Hardwood and Decorative Plywood |
+| NFPA 80 | Standard for Fire Doors and Other Opening Protectives |
+| UL 10C | Positive Pressure Fire Tests of Door Assemblies |
+| ASTM E2074 | Fire Tests of Door Assemblies, Including Positive Pressure Testing |
+| ASTM E90 | Laboratory Measurement of Airborne Sound Attenuation of Building Partitions |
+| ASTM E413 | Classification for Rating Sound Insulation (STC) |
+| IBC Section 716 | International Building Code, Opening Protectives |
+| NFPA 101 | Life Safety Code (Chapter 8, Features of Fire Protection) |
+| WDMA I.S.4 | Water Resistance of Window and Door Assemblies |
+
+# Submittals {toc}
+
+## Action Submittals {toc}
+
+### The Contractor shall submit the following action submittals for review before fabrication:
+- Product data for each door type, including core construction, face material, duty level, and fire-rating listing.
+- Shop drawings (a door schedule) listing each door by opening mark with size, thickness, core, face, finish, rating, and hardware preparations.
+- Veneer-match drawings or elevations for transparent-finish doors showing leaf match, pair match, and any set/sequenced matching across multiple openings.
+- Samples of each face material, finish, and edge band, in the specified species, cut, and grade.
+- For factory-finished doors, a sample showing the complete finish system at the specified sheen.
+
+```datasheet
+label: Action submittals required
+type: checkbox
+options:
+ - Product data (core, face, duty level, listing)
+ - Door schedule shop drawings (per opening mark)
+ - Veneer-match / elevation drawings (transparent finish)
+ - Face, finish, and edge-band samples
+ - Factory-finish system sample
+default: [Product data (core, face, duty level, listing), Door schedule shop drawings (per opening mark), Face, finish, and edge-band samples]
+```
+
+## Closeout Submittals {toc}
+
+### The Contractor shall submit the following closeout submittals before Substantial Completion:
+- Manufacturer's written warranty for each door type, executed in the Owner's name.
+- Care, finishing, and refinishing instructions for field-finished and factory-finished doors.
+- A record copy of the final approved door schedule reflecting as-installed marks, ratings, and preparations.
+
+```datasheet
+label: Closeout submittals required
+type: checkbox
+options:
+ - Executed manufacturer warranty
+ - Care and refinishing instructions
+ - As-installed door schedule of record
+default: [Executed manufacturer warranty, Care and refinishing instructions, As-installed door schedule of record]
+```
+
+## Informational Submittals {toc}
+
+### The Contractor shall submit the following informational submittals where the listed condition applies:
+- For fire-rated doors, copies of the UL, Intertek, or QAI listing and label sheet for each rated configuration.
+- For doors required to meet a quality grade, AWI QCP certification or equivalent evidence of grade compliance.
+- For acoustically rated doors, the laboratory STC test report (ASTM E90 / E413) for the tested assembly.
+
+```datasheet
+label: Informational submittals required
+type: checkbox
+options:
+ - Fire-rating listing and label sheet
+ - AWI QCP / quality-grade certification
+ - Laboratory STC test report
+default: [Fire-rating listing and label sheet]
+```
+
+# Quality Assurance {toc}
+
+## Doors shall be the product of a single manufacturer regularly engaged in the production of architectural flush wood doors.
+
+## Single-source responsibility keeps veneer flitches, core specifications, and finish systems consistent across the project and gives the Owner one party to hold to the warranty; mixing manufacturers within a transparent-finish door set is a frequent cause of visible grain and color mismatch. {note}
+
+## Doors shall comply with the quality grade specified for the project, verified against ANSI/WDMA I.S.1A duty levels or AWI/AWS Quality Grades.
+
+## The quality grade selected shall be stated explicitly and shall not be left to the manufacturer's discretion.
+
+## WDMA duty levels (Heavy, Standard, Economy) and AWI Quality Grades (Premium, Custom, Economy) are not interchangeable shorthand; AWI Premium Grade flush doors cost two to four times Custom Grade, and specifying Premium without confirming budget is a common over-specification — for most commercial work the project default is AWI Custom Grade solid-core, and for healthcare and education that grade is the baseline minimum. {note}
+
+```datasheet
+label: Quality grade (AWI / AWS)
+type: radio
+options:
+ - Economy
+ - Custom
+ - Premium
+default: Custom
+```
+
+```datasheet
+label: WDMA duty level (ANSI/WDMA I.S.1A)
+type: radio
+options:
+ - Economy Duty
+ - Standard Duty
+ - Heavy Duty
+default: Standard Duty
+```
+
+## Fire-rated doors shall bear a label from a listing agency acceptable to the Authority Having Jurisdiction, applied at the factory.
+
+## Fire-rating labels shall never be field-applied.
+
+## The label certifies that the specific door, as built, passed the referenced fire test; a field-applied or transferred label has no test behind it and is grounds for rejection by the AHJ, and field cutting or boring of a labeled door beyond the manufacturer's listed tolerances likewise voids the label, per NFPA 80. {note}
+
+## The Contractor shall confirm whether the AHJ requires positive-pressure (UL 10C / ASTM E2074) listing rather than the older neutral-pressure protocol.
+
+## Most jurisdictions adopting recent IBC editions require positive-pressure fire-test listing; a door listed only to the older neutral-pressure protocol may be rejected, and confirming the required protocol during submittals avoids a late re-order of the entire rated-door package. {note}
+
+```datasheet
+label: Fire-test listing protocol required
+type: radio
+options:
+ - Positive pressure (UL 10C / ASTM E2074)
+ - Neutral pressure (legacy)
+ - Non-rated (no fire listing)
+default: Positive pressure (UL 10C / ASTM E2074)
+```
+
+# Environmental and Service Conditions {toc}
+
+## Doors shall not be delivered to the site or installed until the building is enclosed and the interior environment is controlled.
+
+## Wood doors are dimensionally sensitive to moisture; installing before the building is weathertight and conditioned invites cupping, warp, telegraphing, and adhesive failure that no warranty covers, and sustained interior relative humidity outside roughly 25% to 55% is the most common cause of field warp claims. {note}
+
+## Interior service temperature and relative humidity shall be maintained within the manufacturer's published range from delivery through the warranty period.
+
+```datasheet
+label: Interior relative humidity range maintained
+type: range
+unit: "%"
+min: 25
+max: 55
+step: 5
+setpoints: [30, 50]
+```
+
+## Hollow-core doors shall not be used at high-traffic corridors, locations subject to frequent impact, or locations adjacent to wet or high-humidity areas.
+
+## Hollow-core construction has no continuous core behind the face and offers little screw-holding, impact resistance, or acoustic mass; it is appropriate only for light-duty residential, closet, and similar low-abuse openings, and substituting hollow-core to save cost at an abusive opening produces early failure. {note}
+
+## Exterior-rated flush wood doors, where specified, shall be listed for exterior exposure and shall meet WDMA I.S.4 water-resistance performance.
+
+## A standard interior flush door used at an exterior opening delaminates; exterior service requires an exterior-grade adhesive bond, a weather-resistant face, and a leaf tested for water resistance — these are a distinct product, not a field upgrade of an interior door. {note}
+
+# Door Construction and Core {toc}
+
+## Each door shall be furnished with the core type specified for its opening, and the core material shall be stated explicitly rather than left as generic "solid core."
+
+## "Solid core" spans particleboard, stave (glued block) lumber, structural composite lumber, MDF, agrifiber, and fire-resistant composite cores, each with different weight, screw-holding, acoustic mass, and cost; a manufacturer asked only for "solid core" will supply the lowest-cost compliant core, which may not deliver the intended STC or hardware pull-out. {note}
+
+## Particleboard cores shall comply with ANSI A208.1 Grade LD-1 with a minimum average density of 30 pcf (480 kg/m³).
+
+## Fire-rated doors shall be furnished with the fire-resistant composite core required by the door's listing for the specified rating.
+
+```datasheet
+label: Core type
+type: radio
+options:
+ - Hollow core (light duty only)
+ - Particleboard solid core (ANSI A208.1 LD-1)
+ - Stave lumber solid core
+ - Structural composite lumber (SCL) core
+ - Fire-resistant composite core
+default: Particleboard solid core (ANSI A208.1 LD-1)
+```
+
+## Door thickness shall be 1-3/4 in. (44 mm) for commercial interior openings unless a different thickness is required by the door's fire listing.
+
+## The 1-3/4 in. leaf is the 80%-case default for all commercial interior flush doors; the 1-3/8 in. leaf is reserved for light-duty residential and closet openings, and fire-rated leaves must match the labeled assembly thickness exactly since a thickness change re-opens the listing. {note}
+
+```datasheet
+label: Door thickness
+type: radio
+options:
+ - 1-3/8 in. (35 mm)
+ - 1-3/4 in. (44 mm)
+unit: in.
+default: 1-3/4 in. (44 mm)
+```
+
+## Door width shall be selected per opening, and the clear opening shall satisfy the accessibility requirement at accessible doors.
+
+## A 34 in. minimum door width with standard hardware is required to deliver the 32 in. clear opening mandated for accessible routes; a nominal 36 in. (3'-0") leaf is the common single-leaf corridor default, and width is per opening and is therefore deferred to the door schedule rather than fixed here. {note}
+
+```datasheet
+label: Door width (per opening; coordinate with schedule)
+type: select
+options:
+ - 2'-0" (610 mm)
+ - 2'-4" (711 mm)
+ - 2'-6" (762 mm)
+ - 2'-8" (813 mm)
+ - 2'-10" (864 mm)
+ - 3'-0" (914 mm)
+ - 3'-4" (1016 mm)
+ - 3'-6" (1067 mm)
+drawing_ref: "door schedule"
+default: deferred
+```
+
+```datasheet
+label: Door height
+type: select
+options:
+ - 6'-8" (2032 mm)
+ - 7'-0" (2134 mm)
+ - 8'-0" (2438 mm)
+ - 9'-0" (2743 mm)
+ - 10'-0" (3048 mm)
+drawing_ref: "door schedule"
+default: deferred
+```
+
+## Doors exceeding 3'-6" wide by 10'-0" high shall be confirmed with the manufacturer for special engineering, since most warranties do not extend to larger leaves without it.
+
+## Manufacturer flat-warp warranties typically cover leaves up to about 3'-6" by 10'-0" and pairs up to 7'-0" combined width; oversized custom doors need engineered cores and are non-stock, and confirming the warranty limit before specifying avoids an unenforceable warranty on the largest, costliest leaves. {note}
+
+# Faces, Veneer, and Edges {toc}
+
+## Each door shall be furnished with the face material specified, and for transparent-finish doors the veneer species, cut, and match shall all be stated.
+
+## Omitting species, cut (rotary, plain-sliced, quarter-sliced), or match is a leading cause of substitution disputes and mismatched door sets, because the manufacturer will otherwise supply the most economical compliant veneer; the three together define the appearance and none can be left implied. {note}
+
+```datasheet
+label: Face material
+type: radio
+options:
+ - Hardwood veneer (transparent finish)
+ - High-pressure laminate (HPL)
+ - Factory opaque (paintable MDF face)
+default: Hardwood veneer (transparent finish)
+```
+
+## Transparent-finish veneer faces shall comply with the HPVA HP-1 face grade specified, and the default face grade for premium transparent work shall be Grade A.
+
+## HPVA face grades run from Grade A (virtually defect-free) through Grade B and Grade C to Backing grade; Grade A is the premium transparent-finish default, lower grades admit more color and figure variation, and face grade is referenced within both WDMA I.S.1A and AWI/AWS so it travels with the quality grade. {note}
+
+```datasheet
+label: Veneer face grade (HPVA HP-1, transparent finish)
+type: radio
+options:
+ - Grade A
+ - Grade B
+ - Grade C
+default: Grade A
+```
+
+## Face veneer for slice-cut transparent doors shall be a minimum of 1/42 in. (0.6 mm) thick per ANSI/WDMA I.S.1A.
+
+## Veneer leaf matching within a single door shall be the match type specified.
+
+## Book match alternates adjacent veneer leaves like pages, slip match repeats them in the same orientation, and running match uses leaves in sequence without balancing; the choice is aesthetic but must be stated, and book-match veneer typically carries a 10% to 20% premium over running match. {note}
+
+```datasheet
+label: Veneer leaf match (within a leaf)
+type: radio
+options:
+ - Running match
+ - Slip match
+ - Book match
+default: Book match
+```
+
+## Where doors occur in pairs or sets, the panel-match type for the opening shall be specified.
+
+## Pair and set matching (balance match, center-balance match, or running match across leaves) governs how grain reads across adjacent leaves of one opening; specifying a within-leaf match without also specifying the across-leaf panel match leaves pairs visibly mismatched. {note}
+
+```datasheet
+label: Pair / set panel match (across an opening)
+type: radio
+options:
+ - Running match (across leaves)
+ - Balance match
+ - Center-balance match
+default: Balance match
+```
+
+## Where veneer matching is required to read continuously across multiple openings, the doors shall be sequenced from the same flitch and identified for sequenced installation.
+
+## A book or balance match specified across multiple-leaf openings is meaningless unless the leaves are cut from one flitch and installed in order; sequenced matching is a separate, more costly requirement and must be called out explicitly, with the leaves marked for their installed location. {note}
+
+```datasheet
+label: Sequence-match veneer across multiple openings
+type: radio
+options:
+ - "No"
+ - "Yes - sequenced from a single flitch"
+default: "No"
+```
+
+## Edge banding shall be the type and material specified, compatible with the face material and finish.
+
+## Edges may be solid wood (stile-applied or applied band), HPL-banded to match an HPL face, or MDF for opaque doors; solid wood edges on veneer doors allow site trimming and refinishing, HPL edges resist abrasion, and the edge type must suit both the face and the amount of field fitting expected. {note}
+
+```datasheet
+label: Vertical edge (stile) band
+type: radio
+options:
+ - Solid wood, species to match face
+ - HPL band to match HPL face
+ - MDF band (opaque doors)
+default: Solid wood, species to match face
+```
+
+# Fire Rating {toc}
+
+## Each door at a rated opening shall carry the fire-protection rating required for that opening by IBC Section 716 for the wall type and occupancy.
+
+## IBC Table 716.1 (and the corresponding NFPA 101 provisions) set the required opening-protective rating from the rated wall and occupancy: roughly 20-minute at corridor walls, 3/4-hour (45-minute) at 1-hour-rated walls, 1-hour at certain separations, and 1-1/2-hour at 2-hour walls; flush wood doors are commonly used at 45-minute and below, and specifying the wrong rating is a frequent design-phase error. {note}
+
+```datasheet
+label: Fire-protection rating
+type: radio
+options:
+ - Non-rated
+ - 20 minute
+ - 45 minute (3/4 hour)
+ - 60 minute (1 hour)
+ - 90 minute (1-1/2 hour)
+unit: min
+default: 45 minute (3/4 hour)
+```
+
+## Glazed lite area in rated doors shall not exceed the area permitted by the door's listing and by NFPA 80 for the specified rating.
+
+## For 20-minute and 45-minute labels, listings commonly permit up to 100 in² of rated vision glazing per leaf; 60-minute and 90-minute ratings restrict or eliminate lites unless special listed glazing is used per IBC Section 716, and the lite kit and glazing themselves are specified under [[sync/fire-rated-glazing]] — this standard only sizes and locates the cutout in the leaf. {note}
+
+## Clearance under a fire-rated door shall not exceed 3/4 in. measured to the top of the floor covering, per NFPA 80.
+
+## All hardware preparations in rated doors shall be factory-applied within the door's listing, and no field cutting beyond listed tolerances shall be performed.
+
+## NFPA 80 permits only limited field preparation of labeled doors; boring, mortising, or trimming a rated leaf beyond the manufacturer's listed job-site tolerances voids the label, and all locksets, closers, viewers, and electrical preps must be factory-machined to match the hardware schedule. {note}
+
+# Acoustic Performance {toc}
+
+## Where a door is required to provide sound isolation, the assembly STC rating shall be specified, not the bare slab rating alone.
+
+## The published STC of a door is meaningless without the full perimeter seal; a standard solid-core slab reaches roughly STC 28 to 32, but the installed assembly only performs when perimeter gasketing, an automatic drop seal at the bottom, and a sealed threshold are provided, and hollow-core doors reach only about STC 20 to 25 and cannot be made acoustic by sealing. {note}
+
+## Acoustically rated doors shall be furnished with the perimeter seals, automatic drop seal, and threshold required to achieve the specified assembly STC, coordinated with [[sync/doors-frames-and-hardware]].
+
+## The STC rating shall be verified by a laboratory test report per ASTM E90 and ASTM E413 for the tested assembly.
+
+```datasheet
+label: Acoustic rating (assembly STC)
+type: radio
+options:
+ - Not rated
+ - STC 32-35 (standard solid core + seals)
+ - STC 36-45 (enhanced solid core + drop seal)
+ - STC 46+ (specialty acoustic assembly)
+default: Not rated
+```
+
+# Finish {toc}
+
+## Each door shall be delivered with the finish state specified: unfinished for field finishing, factory-primed, or completely factory-finished.
+
+## Factory finishing (catalytic lacquer, conversion varnish, or UV-cured systems) is increasingly the institutional norm because it removes field-finishing odor, schedule, and quality-control risk; for healthcare and education complete factory finish is the practical default, and field finishing remains acceptable where the project accepts the schedule and air-quality tradeoffs. {note}
+
+```datasheet
+label: Finish state at delivery
+type: radio
+options:
+ - Unfinished (field-finished)
+ - Factory-primed (field topcoat)
+ - Complete factory finish
+default: Complete factory finish
+```
+
+## For opaque (painted) doors, the paint system, number of coats, and sheen level shall be specified rather than left to the manufacturer.
+
+## Factory opaque finishes vary widely in film build, durability, and VOC content; specifying only "opaque finish" produces inconsistent results between suppliers, and the system, coats, and sheen should be stated with VOC limits confirmed against the project's sustainability or local air-quality requirements. {note}
+
+```datasheet
+label: Opaque finish sheen
+type: radio
+options:
+ - Flat / matte
+ - Eggshell
+ - Satin
+ - Semi-gloss
+default: Satin
+```
+
+## Factory-applied finishes shall comply with the VOC content limit applicable to the project.
+
+## Where the project follows a green-building rating system or a local low-VOC ordinance, the factory finish must meet the governing VOC ceiling; this is confirmed during submittals so a compliant system is selected before the doors are finished, not after. {note}
+
+```datasheet
+label: Maximum finish VOC content
+type: range
+unit: "g/L"
+min: 0
+max: 350
+step: 25
+setpoints: [50, 250]
+```
+
+# Pre-Machining and Blocking {toc}
+
+## Doors shall be factory pre-machined for all hardware preparations indicated on the hardware schedule, including locksets, closers, hinges, viewers, and electrical preps.
+
+## Factory machining to the listed bolt patterns is required for rated doors and strongly preferred for all doors, because it is accurate, label-safe, and avoids field-cutting damage; pre-machining locations and patterns must be specified and confirmed against the hardware schedule before fabrication, or field cuts and RFIs follow. {note}
+
+```datasheet
+label: Hardware preparation
+type: radio
+options:
+ - Factory pre-machined per hardware schedule
+ - Field-prepared (non-rated doors only)
+default: Factory pre-machined per hardware schedule
+```
+
+## Hollow-core doors shall be furnished with continuous wood blocking at lockset, closer, and hinge locations.
+
+## Solid-core doors shall be treated as self-blocking for standard hardware unless special or oversized hardware requires added blocking.
+
+## Blocking locations for special hardware, continuous push/pull, Dutch doors, and anticipated future hardware shall be specified in the door schedule.
+
+## Oversized and custom doors with non-standard hardware, hospital push/pull plates, or future signage and viewers need blocking placed during fabrication; omitting the blocking layout leads to RFIs when the Owner adds hardware after fabrication, when the leaf can no longer be opened up to add a core. {note}
+
+```datasheet
+label: Blocking
+type: checkbox
+options:
+ - Continuous blocking at lockset (hollow core)
+ - Continuous blocking at closer (hollow core)
+ - Continuous blocking at hinges (hollow core)
+ - Continuous edge blocking (push/pull, Dutch)
+ - Spot blocking for future hardware
+default: []
+```
+
+# Testing {toc}
+
+## Heavy Duty doors shall be qualified to the WDMA I.S.1A Heavy Duty operational test, including the cycle, torsional-load, and weight tests for that duty level.
+
+## WDMA I.S.1A Section 5 ties each duty level to laboratory tests: Heavy Duty requires a 1,000,000-cycle operation test plus torsional-load and weight resistance, while Standard Duty requires 500,000 cycles; the duty level specified under Quality Assurance therefore carries a defined, verifiable test basis rather than a marketing label. {note}
+
+## Fire-rated doors shall be qualified by a fire-endurance test to UL 10C or ASTM E2074 under the positive-pressure protocol where the AHJ requires it.
+
+## Acoustically rated doors shall be qualified by an ASTM E90 laboratory test, classified per ASTM E413, for the specific assembly furnished.
+
+```datasheet
+label: Operational test cycles (WDMA duty level)
+type: radio
+options:
+ - 250,000 cycles (Economy Duty)
+ - 500,000 cycles (Standard Duty)
+ - 1,000,000 cycles (Heavy Duty)
+unit: cycles
+default: 500,000 cycles (Standard Duty)
+```
+
+# Installation {toc}
+
+## Doors shall not be installed until the frames are set plumb, square, and anchored, and the opening is ready to receive the leaf.
+
+## A door hung in a racked or out-of-tolerance frame will not maintain rated clearances or close properly, and forcing the fit damages the leaf; frame readiness is a precondition, and the frame itself is furnished under [[sync/doors-frames-and-hardware]]. {note}
+
+## Each door shall be installed to the clearances required by its listing for rated doors, or to the manufacturer's standard clearances for non-rated doors.
+
+## Clearance under non-rated interior doors shall be set to the manufacturer's standard, typically 3/4 in. above the finished floor or floor covering where no threshold occurs.
+
+## Fire-rated doors shall be installed in compliance with NFPA 80, including hardware, clearances, and the requirement that the label remain legible and unpainted.
+
+## Doors shall be hung to swing freely and latch positively.
+
+## Where self-closing is required, doors shall close and latch under the action of the closer alone.
+
+## Field cutting of doors shall be limited to the manufacturer's permitted trim allowance, and rated doors shall not be field-cut beyond their listed tolerance.
+
+## Trimming beyond the allowance exposes the core, unbalances the leaf, and on rated doors voids the label; where a leaf will not fit within the trim allowance the door is the wrong size and must be re-ordered, not forced. {note}
+
+## Installed doors shall be adjusted, and any damaged or warped leaf shall be replaced rather than repaired in the field.
+
+## Warp, delamination, and face damage are not field-repairable on an architectural door and are covered by the warranty; patched or planed-down doors fail inspection and shorten service life, and replacement is the correct remedy. {note}
+
+# Delivery, Storage, and Handling {toc}
+
+## Doors shall be delivered factory-wrapped and protected, and shall not be delivered until the building is enclosed and conditioned.
+
+## Premature delivery into an unconditioned building exposes the leaves to the same moisture swings that cause warp in service; the protective wrap stays on until the doors are ready to install and finish. {note}
+
+## Doors shall be stored flat, fully supported on a level surface, in a dry, conditioned space, and shall not be stood on edge or leaned against walls.
+
+## Storing doors on edge or unevenly supported induces a set that becomes permanent warp; flat, supported storage in the conditioned space preserves flatness until installation. {note}
+
+## Doors shall be handled with clean gloves or clean hands, and shall not be dragged across one another.
+
+## Veneer and factory finishes mark easily; dragging leaves scratches faces and edges, and clean handling avoids fingerprints and oil staining on transparent-finish faces that telegraph through the topcoat. {note}
+
+## Each door shall be sealed on all edges, including the top and bottom rails, before or promptly after installation.
+
+## Unsealed top and bottom edges absorb moisture and are the most common path to field warp and edge swelling; sealing all six surfaces, including the often-overlooked top and bottom, is required to honor the flatness warranty. {note}
+
+# Warranty {toc}
+
+## The manufacturer shall provide a written warranty against defects in materials and workmanship, including delamination and warp beyond the manufacturer's flatness tolerance, for the period specified.
+
+## Architectural flush doors are commonly warranted for the life of the installation for solid-core interior doors and for shorter terms for hollow-core and exterior doors; the warranty is conditioned on the doors being stored, sealed, finished, and serviced within the published environmental range, which is why the environmental and handling requirements above are enforceable, not advisory. {note}
+
+## The warranty shall cover the cost of replacement, including refinishing and rehanging, of any door that fails within the warranty period due to a covered defect.
+
+```datasheet
+label: Warranty term
+type: radio
+options:
+ - 1 year
+ - 5 year
+ - Life of installation (solid-core interior)
+default: Life of installation (solid-core interior)
+```
+
+# Spare Parts and Attic Stock {toc}
+
+## The Contractor shall furnish spare doors as attic stock where the Owner requires replacement leaves to be held on site.
+
+## For projects with many identical openings, a small attic stock of finished, matched doors lets the Owner replace a damaged leaf without re-ordering and re-matching, which is especially valuable for transparent-finish sets where later doors may not match the original flitch. {note}
+
+```datasheet
+label: Attic stock (spare finished doors)
+type: range
+unit: leaves
+min: 0
+max: 10
+step: 1
+setpoints: [0, 2]
+```