DuraVent DuraFlex 4DFA-25 AL Length – 4″ x 25′
The DuraFlex AL kit is available in 3″ to 8″ diameters. Flex lengths are available in 25′ and 35′.
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.
For Use with Natural Gas or Propane Gas Appliances Only
- Inner Diameter: 4″
- Fuel Types Compatible With: Natural Gas, Liquid Propane
- UL Listed: Yes
- Length: 25′
- Double Wall Construction
- Limited Lifetime Warranty
DuraFlex Aluminum Flex Liner is available in 3″ to 8″ diameters and in 25′, 35′, and 50′ lengths.