3M™ Fire Barrier Pass-Through Device Foam Plugs

Replacement foam plugs for 2-, 2-1/2- or 4-inch Round 3M™ Fire Barrier Pass-Through Device. These foam plugs enhance the Cold and Hot smoke seal (device can achieve UL classified L-Rating with foam plugs and 3M™ Fire Barrier Sealant or 3M™ Fire Barrier Moldable Putty Pad MPP+, see system details).