A pipe penetrates a multi-layered wall assembly. Firestopping materials 07 2119.A and sealant applications 07 9200.A and 07 9200.B are applied to each side of the penetration. The perimeter of the penetration incorporates components 07 4213.19.B and 23-05 for integration with the wall layers. Wall types WA-18 and WA-18A define the assembly, with references 7-21 and 7-22 indicating the interface conditions.
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