DuraFlex AL is an economical venting system used for relining masonry chimneys 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 or wall space heating applications. DuraFlex AL is designed to protect the masonry chimney from the damaging effects of flue product condensation.
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.
Aluminum flexible relining for masonry chimney. Use with natural gas or liquid propane category I, draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
Materials and Construction
Single-wall .010” aluminum (2-ply of .005”).
Clearances
0" Clearance to masonry.
Diameters
3", 4", 5", 5 ½", 6", 7", and 8".
Listings
Listed to UL 1777 and ULC S635.
Warranty
Limited Lifetime Manufacturer's Warranty - DuraVent warrants that its products will be free from substantial defects in material or manufacturing, if properly installed, maintained and used.
