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An easy-to-dispense, non-asbestos, inorganic material designed to be used as an alternative packing material to mineral wool, fiberglass and backer rod in through-penetration firestop systems. With excellent strength and flexibility characteristics it is an ideal through-penetration packing material.
Installation-friendly material is easy-to-dispense and its compact packaging is optimized for portability. The smooth-textured woven material can be torn by hand, eliminating the need for a knife. 3M™ Fire Barrier Packing Material PM4 material is less irritating to the skin when compared to conventional mineral wool. Meets International Building Code (IBC) and other key life safety building codes. Also meets International Residential Code (IRD) as a stand-alone fireblocking material.