BOSS 814 Firestop
UL Classified intumescent latex firestop sealant that is one part, elastomeric, intumescent sealant that expands when exposed to fire or extreme heat. Suitable for adhesion to almost any surface and remains flexible.
10.1 oz. Cartridge, 28 oz. Cartridge, 20 oz. Sausage, 5 Gallon Pail