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An economical venting system used for relining masonry chimney for natural gas or liquid propane category I, draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent for a wide range of applications, including: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications. Protects the masonry chimney from damaging effects of flue product condensation. Simpson Dura-Vent has changed their name to DuraVent. DuraVent is a recognized technological leader in the venting industry. Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.

• UPC: 662492335703
• Manufacturer Part No: 4DFA-35

• Sub Brand: DuraFlex
• Diameter: 4 in.
• Brand Name: DuraVent
• Packaging Type: Boxed
• Product Type: Chimney Relining Pipe
• Chimney Vent Type: Type B
• Length: 35 ft.
• Compatible Fuel Types: Natural Gas/Propane
• Wall Construction: Double Wall
• Wall Thickness: 0.01 in.
• Material: Aluminum
• Adjustable: Yes
• Width: 4 in.
• Consult the manufacturer's catalog before selecting or installing
• Flexible, 2-ply, .010"
• Number of Pieces Included: 4 pc