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. Show More Show Less