Nusku Partners LLC (8140-2064:0503) — type figure.
Drawn from this record's own sourced values; every dimension on it is one a
published document states, and a parameter the source did not publish is
named on the drawing rather than estimated.
The profile is traced from the manufacturer's own dimensioned drawing, reviewed and signed. CC BY 4.0.
Nusku Partners LLC (8140-2064:0503)
This is a listed siding assembly. Listing 8140-2064:0503. This site cites SFM 12-7A-1. Match the model and orientation.
Enter your ZIP to see which local requirement this meets.
Nusku's Terratek tongue-and-groove panel assembly is listed for wildfire-area walls under 8140-2064:0503, with defined backing conditions.
California listing 8140-2064:0503 describes tongue-and-groove panels measuring 19/32 inch thick by 5-7/16 inches wide. Behind them, the design includes 7/16-inch exterior-grade oriented strand board and a moisture barrier. It then allows 3/8-inch furring strips made of wood or noncombustible material, or a 3/8-inch noncombustible drainage mat. Those alternatives retain their material and thickness conditions.
The September 2025 OSFM WUI handbook records the siding in category 8140 and identifies SFM 12-7A-1 as its test protocol. This makes the backing detail as relevant as the panel name when reviewing a proposed wall. Carry the chosen furring or mat option into that review, confirm the live listing, and follow Nusku's installation instructions and product data sheets.
Documents for this product
Each link opens the publisher's own copy, so you read the revision they are shipping today.
The manufacturer's own CAD sheet, on its live host. Two dimensioned end sections at .6875 in thick and 5.50 in wide, with a .25 in tongue, two .34375 in half-thickness dimensions that sum to the thickness on the drawn joint centreline, and either a .125 in nickel gap or a .0625 in micro-V at each face edge. CAUTION FOR REVIEW: the 5.50 in dimension line's witness lines fall at the tongue tip and at the far edge, so it is the OVERALL width and the finished coverage is 5.25 in; read that way the sheet is isotropic to 0.1 per cent at 600 dpi and read as a face width it is 5.3 per cent anisotropic. This listing's own text says 19/32 in thick by 5-7/16 in wide, which disagrees with the drawing on both numbers; see attributeConflicts.
Documented attributes
Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.
