Description
Perforated PVC retrofit. Retrofit design for standard rafter or manufactured truss construction. 9 sq. in. NFA per linear ft. Retrofit-double leg return.
Perforated PVC retrofit. Retrofit design for standard rafter or manufactured truss construction. 9 sq. in. NFA per linear ft. Retrofit-double leg return.
Perforated PVC retrofit. Retrofit design for standard rafter or manufactured truss construction. 9 sq. in. NFA per linear ft. Retrofit-double leg return.
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