Firestop Plug, Fire Rating 2 hr, Fire Resistance Type Intumescent, Firestop Type Plug, Interlocking No, Overall Height 3.1 in, Overall Length 3 in, Overall Width 3 in, Color Red, Expansion Temperature 350 Degrees F, Expansion Volume 10X, Features No Expiration Date, For Material Type Concrete, Gypsum, For Use On Blank Openings, Cables, Conduit Stubs and Sleeves, Floors, Walls, Maximum Service Temperature 130 Degrees F, Plug Diameter 2 in, Standards ASTM E814, CAN/ULC-S115, UL 1479