Kirei
Notes: 100% PET felt panel (min. 60% recycled post-consumer content), 12mm thick, 1200mm x 2800mm (47.24in x 110.24in) = 36.2 sq ft/panel, 18 lbs/panel. Kirei's own Aug-2021 spec sheet (ASTM C423, sabins-per-object basis) gives NRC by mounting: 0.40 direct-fix/no air gap, 0.55 with 20mm air gap (value used here), 0.75 with 50mm air gap, 0.90 with 1in fiberglass backing, 1.00 with 2in fiberglass backing. Fire rating ASTM E84 Class C (Class A achievable with treatment). CDPH/CA 01350 and GreenTag low-VOC compliant; Red List Free/Declared, Living Building Challenge eligible. The kireiusa.com product page itself returned HTTP 403 to automated fetch, so sourceUrl is cited from search-indexed metadata while specSheetUrl (Kirei's own PDF, distributed via an authorized dealer's site) was fetched and read directly for all values above.
NRC per ASTM C423. Data retrieved 2026-07-02 from the manufacturer source page.