BOSS 812 Fireblock Foam
A ready to use foam designed to prevent the spread of smoke and toxic gases from one compartment to another, thereby slowing down the spread of fire. Can be used to seal around copper, PVC and wastewater pipes, as well as conduit and duct work. GENIUS GUN PATENT NO. 1010639
12 oz. Straw Can, 20 oz. Genius Can, 24 oz. Gun Can