Intumescent Fire & Smoke Seal. Edge Sealing System: UL 10C (Category G) classified for perimeter. Rated up to 90 minutes for Category B wood fire-rated doors up to 8'0" x 9'0" (pairs) and 4'0" x 9'0" (single). Smoke and Draft Control Gasketing: UL 10C (Category H) classified. Tested to UL 1784. Complies with IBC, MFPA 80, NFPA 105 and NFPA 252. Available in brown, charcoal and white. This is a non-stock item. Please specify color in order comments.