United States / Build / Timber Products Company (8140-2343:0501)

Timber Products Company (8140-2343:0501)

This is a listed siding assembly. Listing 8140-2343:0501. This site cites SFM 12-7A-1. Match the model and orientation.

Kind: listed-assembly. Brand: Timber Products Company. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-23. JSON (CC BY 4.0)

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Timber Products' Douglas-fir APA 303 reverse-board-and-batten plywood is listed for wildfire-area siding with defined veneers and groove spacing.

Listing 8140-2343:0501 permits nominal thickness of 19/32 inch or greater, using the 19/32 Performance Category designation. Panels may be ungrooved; where grooves are present, they must be at least 12 inches apart on center. The panel size is 4 feet by 8 feet or taller.

Douglas fir veneers form the face, back and center. The cross-ply veneers are PS1 Group 2 species. Those layer assignments distinguish the described plywood from a panel selected only for its reverse-board-and-batten appearance. SFM 12-7A-1 is the named test protocol.

Compare the veneer construction, nominal thickness and groove arrangement with the manufacturer's instructions and product data sheets, then confirm the exact GOVmotus listing. The permission for taller panels and wider groove spacing retains the other stated conditions; it does not replace them.

Documented attributes

Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.

AttributeValueEvidence source
Fire
Test standard sfm 12 7a 1 OSFM Building Materials Listing — 8140-2343:0501 (official-listing · Listing 8140-2343:0501, TEST PROTOCOL)TEST PROTOCOL: SFM 12-7A-1

Published requirement matches

These links are generated from the cited attributes above. They do not decide installation or a project result.

ProgramID / sourceEvidence dateExpiresStatus
CAL FIRE BML 8140-2343:0501 · Search BML for 8140-2343:0501 2026-08-25 2027-06-30 listed

Tests and programs cited

Specification notes

Sources

Timber Products Company (8140-2343:0501). FireApproved. https://fireapproved.com/materials/timber-products-company-8140-2343-0501/. Last verified 2026-08-23.