ROCKWOOL® SAFING MINERAL WOOL BOARD 4 in.X 24 in X 48 in. (32 SQFT)

Rockwool Roxul Safe™ Mineral Wool Board, Insulation Thickness: 4 in, Material: Mineral Wool, Length: 48 in, Width: 24 in, Density: 4.5 pcf, Application: For Use to Fill Perimeter Gaps Between Concrete Floor Slabs and Exterior Wall Systems, Between Firewalls and Ceiling Slabs and Around Conduit Pipes and Duct Openings Through Walls and Floor Slabs, Special Features: Semi-Rigid, Temperature Rating: 1200 deg F, Water Vapor Sorption: 0.04 %, Flame Spread Index: 0, Smoke Developed Index: 0