Metacaulk 1" x 12" Wrap Strip (case of 6) 66135

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Metacaulk Wrap Strip is a flexible strip of highly intumescent firestop material used primarily for plastic and insulated pipe applications.When exposed to heat, it expands and forms a strong char to seal off the penetration and prevent the passage of flames and hot gases. Easy to apply - simply wrap required number of strips around penetrating item and push into annular space. May also be used with an universal collar.