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This patented intumescent wrap/strip firestops difficult through-penetrations such as plastic pipe, insulated pipe and cables. When exposed to heat, this flexible, rubber-like strip expands up to ten times its original volume, forming a very hard char.
3M Fire Barrier Duct Wrap 615+ 3M Fire Barrier Grease Duct Access Door
The only fire rated duct wrap you need for code required protection of grease and air ducts.
Easy-to-install, fire-tested and both UL- and Intertek-listed access doors for use in conjunction with 3M Fire Barrier Duct Wraps.
3M Plenum Wrap 5A
A fire resistant wrap consisting of a patented inorganic blanket encapsulated with a scrim-reinforced foil.