DuraVent PolyPro Concentric Firestop Spacer: two halves fit around the vent at floor crossings
The DuraVent PolyPro Concentric Firestop Spacer is a two piece spacer for vent openings through floors and ceilings. Its halves come together around the pipe. This version fits concentric pipe, not single wall PolyPro, which uses a different spacer. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters. Concentric means one pipe sits inside another. The polypropylene inner pipe takes exhaust out. The powder coated aluminum outer pipe brings in air for the appliance to burn. That arrangement needs just one opening through a wall or roof rather than separate openings for air and exhaust.
Choose 2 by 4 inch, 3 by 5 inch, or 4 by 6 inch. The first number describes the exhaust pipe, the second the outer pipe. A firestop belongs at each floor or ceiling crossing, including the attic floor, but not the roof deck. Wall straps carry the vent’s weight, never the appliance. They support vertical and other runs, with a strap immediately after each elbow or tee. Need pipe to go with it? See the DuraVent PolyPro Concentric Vent Length pipe section. The DuraVent PolyPro Concentric Firestop Spacer ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPS-FS | 3PPS-FS | 4PPS-FS
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
5” (130mm) | 6” (150mm) | 8” (200mm)
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