Overview
DuraVent is the premier company in the venting industry. With a broad range of engineered venting products, DuraVent has earned its reputation as the industry leader by offering innovative, safe, and professional products for the HVAC and Hearth markets.
DuraFlex AL 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 wall or space heating applications. Protects the masonry chimney from damaging effects of flue product condensation.
Features
- The aluminum inner pipe heats up faster.
- Remains hot during operation and eliminates condensation in the appliance and vent system.
- Connects DuraFlex Aluminum flex to any brand of B-vent, allowing installers to reline a masonry chimney without needing to replace the existing B-vent connector to the appliance, saving the installer time and the homeowner money.
- 100% manufactured in the USA.
Includes
| DuraFlex AL Top Plate | |
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Use to seal the top of the masonry chimney. |
| DuraFlex AL Cap | |
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Use to terminate a relining system at the top of the masonry chimney. |
| DuraFlex AL Mortar Sleeve | |
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Use to protect DuraFlex when passing length through a masonry wall. |
| DuraFlex Aluminum Length | |
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For use as air intake only. Aluminum flex liner available in 25’, 35’, and 50’ flex lengths. |
Applications:
DuraFlex AL (DFAL) aluminum flexible relining for a 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.
Specifications
| Model | Size | Flex Length |
| 3DFA-25K | 3″ I.D | 25 ft. |
| 4DFA-25K | 4″ I.D | 25 ft. |
| 5DFA-25K | 5″ I.D | 25 ft. |
| 55DFA-25K | 5.5″ I.D | 25 ft. |
| 6DFA-25K | 6″ I.D | 25 ft. |
| 7DFA-25K | 7″ I.D | 25 ft. |
| 8DFA-25K | 8″ I.D | 25 ft. |
| Vent Construction | Double-Wall | |
| Vent Type | Type B Gas Vent | |
| Materials & Const. | 010” aluminum (2-ply of .005”) | |
| Clearance | 0” clearance to masonry | |
| Listings | Listed to UL 1777 and ULC S635 | |
| Warranty | Limited Lifetime Warranty | |
Downloads
Warning: This product can expose you to Chromium, known in the state of California to cause cancer, congenital disabilities, or other reproductive harm. For more information, see CA Prop 65 Warning
