DuraVent’s PolyPro is a new polypropylene-based ULC-S636 Type BH, Class II venting system. Engineered for use with condensing appliances, PolyPro is corrosion-resistant and utilizes gaskets that enable rapid and adhesive-free assembly. The system is available in 2-, 3-, 4-, 5-, 6- and 8-inch diameters. PolyPro has a higher operating temperature of 230°F and is engineered with a corrosion-free condensation management system.

DuraVent. www.duravent.com. Circle 13

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