3M CP25WB Fire Barrier Sealant Red/Brown (Pack of 1) Reviewhttp://tinyurl.com/mzcg26q 3M CP25WB Fire Barrier Sealant Red/Brown (Pack of 1) Intumescent-Expands When Heated To Seal Around Items Consumed By Fire.Endothermic-Releases Chemically Bound Water To Cool Exposed SurfacesThis product provides up to 4-hours fire protection in tested and listed systems.When properly installed
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