3M - 3M Electrical PLG4 4 x 3-1/8 Inch Maroon Fire Barrier Rated Foam FIP Plug

3M™ Fire Barrier Plug is a replacement foam plug for 2-inch Round 3M™ Fire Barrier Pass-Through Device. This product works together with the device to help prevent the spread of smoke and fire. These foam plugs enhance the cold and hot smoke seal and help the system achieve UL classified L-Rating. Features: Works with 2-inch Round 3M™ Fire Barrier Pass-Through Device to help prevent the spread of smoke and fire; Enhance cold and hot smoke seal; Plays a part in a system that allows pass-through device to achieve UL classified L-Rating; Foam plugs are part of a hassle-free firestop method