DuraVent 2"-4" Inner Diameter PolyPro Horizontal Termination Kit - Concentric

Size: 2"

Estimated Arrival: Between and . (To All Contiguous States)

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DuraVent is the premier company in the venting industry. With a broad range of engineered venting products, DuraVent has earned its reputation as the industry leader by offering innovative, safe, and professional products for the HVAC and Hearth markets.

 PolyPro and PVC/CPVC: PVC pipes are commonly used for venting water heaters, condensing boilers, and warm air furnaces. PolyPro is an engineered alternative for condensing gas appliances. Engineered for venting, it is easier and faster to install than PVC, saving the contractor time and money. Polypropylene has a higher operating temperature limit of 230°F/110°C (PVC is 149°F/65°C max and CPVC is 194°F/90°C). PolyPro is engineered with a condensation management system. 


  • Use for concentric horizontal terminations. Includes 2 appliance adapters, white wall plate, white firestop, and co-linear adapter.
  • White Termination with Bird Guard Screen. UV resistant.
  • The inner plate is 8 5/8” (220mm) square, the outer plate is 9 7/16” (240mm) square for all flue sizes.
  • Includes 2 Locking Clamps and two Adapter Connector clamps.
  • Adapters included transitioning from PVC appliance outlet to twin pipe PolyPro.


PolyPro is a polypropylene vent pipe for use with ANSI Category II and IV gas-burning appliances, including high-efficiency water heaters, condensing boilers, and warm air furnaces. PolyPro 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.



    Model Size A B
    2PPS-HKC 2"x4" | 60x100mm 13.75" | 350mm 4.75" | 121mm
    3PPS-HKC 3"x5" | 80x130mm 13" | 330mm 4.75" | 121mm
    4PPS-HKC 4"x6" | 100x150mm 13.75" | 350mm 5.5" | 140mm
    Clearance 0” clearance to combustibles / vertical installations
    Listings ULC S636 is Listed as a Class IIA, IIB, and IIC vent system.
    Warranty 10-years Limited warranty



    Warning: This product can expose you to Chromium, which is known in the state of California to cause cancer, congenital disabilities, or other reproductive harm. For more information, see CA Prop 65 Warning