Polypropylene (PP) Common Venting Installation Instructions 10
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4” Back-to-Back Add-On and Starter Kits
Direct Vent
Room Air
4” ADD-ON (P/N: 790143) 4” STARTER (P/N: 790137)
4” ADD-ON (P/N: 790142) 4” STARTER (P/N: 790132)
