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UL System Firestop for Insulated Pipe through Wall Assembly

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UL System No. W-L-5028 for penetrations through rated wall assemblies comprises steel studs and gypsum board. Through penetrants consist of steel pipe, copper tubing, or copper pipe wrapped with plastic tube insulation. Fill, void, or cavity material is installed around the penetrant within the annular space to achieve specified F, T, L, FH, and FTH ratings according to ANSI/UL1479 and CAN/ULC S115 standards. All classified materials bear the appropriate UL or cUL certification marks.

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