Firestop Strip, Fire Resistance Type Endothermic, Firestop Type Wrap, Overall Width 24 in, Roll Length 50 ft, Color Silver, Features Non-Asbestos Wrap, Foil Encapsulated Scrim, Lightweight and Flexible Material, For Use On Cable, Piping, For Use With Cables and PVC, CPVC, PB, PE, PP, PVDF and ABS Pipe in Return Air Plenums, Length Type Roll, Outer Material Inorganic Fiber, Resistance Properties Fire