Firestop Strip, Fire Rating 4 hr, Fire Resistance Type Intumescent, Firestop Type Wrap, Overall Width 2 in, Roll Length 2 ft, Color Red, Silver, Expansion Temperature 300 Degrees F, Features Aluminum Foil Exterior, Re-Enterable Material, For Pipe Size 10 in, For Use With 3M Fire Barrier RC-1 Restricting Collar, Outer Material Aluminum