DuraConnect II
Double-wall connector pipe, UL approved as a Type B Gas Vent segment, for use in conditioned and unconditioned attics and crawl spaces. (Not to be enclosed and cannot penetrate through walls, floors, or ceilings.) Duravent’s DuraConnect II is known as the “Contractor‘s Choice” for its ease of installation and durability. DuraConnect II’s heavy-duty construction features precision twistlock connection, which provides ease of assembly or disassembly without damage to the product. The double-wall flexible vent is certified as having the equivalent thermal properties as Type B Gas Vent and can be used when a Type B Gas Vent double-wall connector is required.
c-UL-us 441 System
DuraFlex AL
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.
Applications
DuraFlex AL (DFAL) 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
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
For more details and further reading, refer to the Attachments.
