Item # bci1760993

DuraVent 6" Inner Diameter - DuraFlex AL Flexible Liner Chimney Pipe - Double Wall - 25' Flex Pipe Length

Model: 6DFA-25

Finish: Choose Finish
  • Aluminum
    1 In Stock

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1 In Stock

Product Overview

DuraFlex AL Collection DuraFlex AL Length - 6 Inch x 25 Foot

This DuraFlex AL DuraFlex AL Length - 6 Inch x 25 Foot is the ultimate in flexible components for strength and flexibility. Use with Category I gas-burning appliances with draft hood. UL 1777 aluminum liner. Flex lengths .


  • Inner Diameter: 6"
  • Fuel Types Compatible With: Gas, Liquid Propane
  • UL Listed: Yes
  • Length: 300"
  • Double Wall Construction
  • Limited Lifetime Warranty

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.

Looking for Simpson Dura-Vent? You found it! 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. The company's research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro. Scientifically proven materials and unequalled engineering make DuraVent products not only the best choice, or safest choice, but the only choice for professional quality venting products.

This product is listed under the following manufacturer number(s):

Dimensions and Measurements

Inner Pipe Gauge
300 in.
Outer Pipe Gauge
Pipe Inside Diameter
6 in.
Pipe Length
300 in.
Product Weight
25 lbs.

Characteristics and Features

Boxed Length
Inner Pipe Material
Outer Pipe Material
Pipe Class
Flexible Liner
Pipe Shape
Vent Construction
Double Wall

Electrical and Operational Information

Fuel Type

Warranty and Product Information

Boiler, Category I Appliances, Draft Hood Equipped Appliance, Fireplace, Furnace, Space Heater, Type B Appliance, Wall Heater, Water Heater
Approved for Commercial Use
DuraFlex AL
Manufacturer Warranty
Limited Lifetime
UL Listing Number
UL 1777, ULC S635