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 304 and 316 are lighter, more economical liners. Excellent when there are minimal offsets in the chimney. DuraFlex 304SS and 316SS are intended for wood burning, non-condensing gas, and oil-fired appliances. Where greater corrosion resistance is desired, such as in coal-fired appliances, DuraFlex 316 is recommended. DuraFlex 304SS and 316SS are listed as UL 1777 and ULC S635.
Customize The Flex You Need
All DuraFlex is available for custom lengths (minimum 10' length) orders. DuraFlex Pro and DuraFlex SW also offer 9"-12" diameters when ordered in custom lengths. (minimum 10' length). Use Ventinox components for all 9"-12" flex systems.
Features
- Custom lengths are available for 3”-8” diameters.
- Minimum length of 10’ for custom orders.
- Maximum 100' for 3" - 8". Must be ordered in increments of 10'.
- Use with wood-pellet, non-condensing gas, wood-burning, and oil appliances.
- 3"-8" diameter flex can be ovalized up to the first 4'.
**Call Customer Service to add ovalizing to your order and for pricing.**
Applications:
DuraFlex 316 flexible relining for a masonry chimney. Use with gas, wood pellet, oil, or wood appliance. Applications include fireplace inserts, furnaces, boilers, and water heaters. 316 is designed for use in harsher conditions, for more resistance to corrosion, such as coal.
Specifications
| Model |
Size |
Flex Length |
| 3DF316-20 |
3" I.D |
20 ft. |
| 4DF316-20 |
4" I.D |
20 ft. |
| 5DF316-20 |
5" I.D |
20 ft. |
| 55DF316-20 |
5.5" I.D |
20 ft. |
| 6DF316-20 |
6" I.D |
20 ft. |
| 7DF316-20 |
7" I.D |
20 ft. |
| 8DF316-20 |
8" I.D |
20 ft. |
| Materials |
316 Stainless Steel |
| Construction |
Single-Wall |
| Clearance |
0” clearance for gas, oil, and pellet applications. |
| Clearance |
1” clearance to masonry for wood-burning |
| Listings |
Listed to UL 1777 and ULC S635 (MH45609). |
| Warranty |
Limited-lifetime warranty |
Downloads
Safety Information: CA Prop 65 Warning
