DuraVent PolyPro Flex Spacer: keeps the liner centered inside the chimney
The DuraVent PolyPro Flex Spacer is a centering part for the flexible vent liner inside a chimney. It holds the liner away from the chimney wall rather than letting it rest against it. A ratchet lets the installer adjust the spacer around the liner. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters. Choose a 2 inch or 3 inch spacer on this page. The 3 inch option fits both 3 and 4 inch flex. Spacers belong along the liner at intervals of no more than 6 feet.
A qualified professional installs the PolyPro Flex liner and cuts it to the length needed on site. The cut goes through a groove in the flex, using a saw or knife. The appliance manufacturer determines the allowed vent length. Looking for the support bracket instead? See the DuraVent PolyPro Flex Support Bracket. The DuraVent PolyPro Flex Spacer ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPS-S | 3PPS-S
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)
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