DuraVent PolyPro Flex Chimney Support: holds the elbow at the bottom of the liner
The DuraVent PolyPro Flex Chimney Support is a bracket that holds the support elbow at the bottom of a flexible liner. It attaches to the inside wall of a masonry chimney or chase, the enclosure around the liner. Mounting hardware and a pipe support clamp come with it. Choose a 2, 3, 4, or 5 inch size to match your flex liner. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters.
PolyPro Flex has two polypropylene walls and carries exhaust up through an existing chimney or chase. That enclosure acts only as a sleeve, and the chimney cannot also vent another appliance. Both ends of the liner need a flex gasket, a seal seated in the first complete groove closest to the cut. A flex fitting closes around the liner with two locking tabs. Gaskets use only soapy water for lubrication, never petroleum grease. These connection details matter at the bottom as well as the top. Need the elbow this bracket holds? See the DuraVent PolyPro Support Elbow Extended. The DuraVent PolyPro Flex Chimney Support ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPS-SUP | 3PPS-SUP | 4PPS-SUP | 5PPS-SUP
Applications
PolyPro is a polypropylene vent pipe for use with ANSI Category II and IV gas-burning appliances, including highefficiency water heaters, condensing boilers and warm air furnaces. Poly Pro is listed by Intertek to the ULC S636 standard in Canada as a Class IIA, IIB and IIC vent system suitable for exhaust temperatures up to 230°F / 110°C, and a maximum positive pressure of 15 in-w.c.
Materials and Construction
Rigid pipe constructed of 2.2mm (minimum) thick polypropylene. Flex is double-wall polypropylene. EPDM or Viton gaskets.
Clearances
General: 0″ clearance to combustibles for exhaust temperatures up to 194°F / 90°C.
Vertical Installations: 0″ clearance for vertical installations up to exhaust temperatures of 230°F / 110°C.
Horizontal Installations: ¼” / 6mm clearance to combustibles for horizontal installations at exhaust temperatures up to 230°F / 110°C.
Concentric vent system components, including Horizontal and Vertical Terminations: 0″ clearance to combustibles for exhaust temperatures up to 230°F / 110°C.
Diameters
2” (60mm) | 3” (80mm) | 4” (100mm) | 5” (130mm)
Listings
Listed with the appliance in the USA, check with appliance manufacturer. Intertek / ETL listed to ULC-S636 Listed as a Class IIA, IIB, and IIC vent system.
Previously the CSA certification trademark was shown in error in conjunction with the PolyPro product – references have been removed.
Videos
Newly Designed PolyPro® Locking Clamps Video
PolyPro® Double-Wall Video
Why Polypropylene? DuraVent’s PolyPro® Venting System Video