3M 54900 Lightweight Fire Barrier Mortar, 44 lb Bag, Off-White with Dark Flecks, Powder, Slight Cement

3M Fire Barrier Mortar, Lightweight, Bag, 44 lb, Composition: Mineral Salt, Silicate Mineral, Acid, Quartz Silica, Calcium Carbonate, Powder, Off-White with Dark Flecks, Slight Cement, 2.1 to 2.4 Specific Gravity

• Ready-to-mix pumpable mortar is deal for firestopping large annular spaces and floors
• Lightweight mortar designed to absorb heat, reducing chance of combustion on unexposed sides
• Polypropylene-fiber reinforced powder mixes with water for self-leveling or non sag applications
• Contains no asbestos, MMMF or halogens
• Firestop tested for up to 3 hr