Silicone Fire and Smoke Seal. Combination Edge Sealing System is UL 10C (Category G) classified. Rated up to 20 minutes for Category B wood fire-rated doors up to 8'0" X 8'0" (pairs), 4'0" X 8'0" (single). Smoke and Draft Control Gasketing is UL10C (Category H) classifed. Tested to UL 1784. Complies with IBC, NFPA 105, NFPA 252 for all wood and steel fire doors. Available in brown, charcoal, white, tan, and clear. Sold in Rolls. This is a non-stock item. Please specify color in order comments when ordering. Please allow 7 to 10 days for delivery.