DuraVent DuraFlex 316 Stainless Steel Length: added corrosion resistance for harsher fuels
The DuraVent DuraFlex 316 Stainless Steel Length is a coil of flexible stainless steel liner with ridged walls. DuraVent recommends this alloy when corrosion is a concern, such as with coal or oil containing sulfur. One coil runs from the appliance to the chimney top. It suits chimneys with few bends. DuraFlex Stainless is DuraVent’s flexible stainless steel liner for relining a masonry chimney that vents a wood, pellet, oil, or gas appliance.
Choose the length first, then the diameter. Lengths from 15 to 35 feet come in diameters from 3 to 8 inches, including 5 1/2 inch. The 50 feet length comes only in 7 and 8 inch diameters. The liner is cut to fit at the job site with a metal cutting saw. It can be shaped into an oval to pass through a tight opening, though this reduces the space inside. The top plate, cap, tee connection for the bottom, and liner pulling tool are sold separately. Have several chimney bends? See the DuraVent DuraFlex Pro Stainless Steel Length liner coil. The DuraVent DuraFlex 316 Stainless Steel Length ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 3DF316-15 | 4DF316-15 | 5DF316-15 | 55DF316-15 | 6DF316-15 | 7DF316-15 | 8DF316-15
SKU: 3DF316-20 | 4DF316-20 | 5DF316-20 | 55DF316-20 | 6DF316-20 | 7DF316-20 | 8DF316-20
SKU: 3DF316-25 | 4DF316-25 | 5DF316-25 | 55DF316-25 | 6DF316-25 | 7DF316-25 | 8DF316-25
SKU: 3DF316-30 | 4DF316-30 | 5DF316-30 | 55DF316-30 | 6DF316-30 | 7DF316-30 | 8DF316-30
SKU: 3DF316-35 | 4DF316-35 | 5DF316-35 | 55DF316-35 | 6DF316-35 | 7DF316-35 | 8DF316-35
SKU: 7DF316-50 | 8DF316-50
Applications
- DuraFlex Pro ultra flexible relining for masonry chimney. Use with gas, wood pellet, oil, or wood appliances. Applications include: fireplace inserts, furnaces, boilers, and water heaters.
- DuraFlex SW smooth wall flexible relining for masonry chimney. Use with gas, wood pellet, oil, or wood appliances. Applications include: fireplace inserts, furnaces, boilers, and water heaters.
- DuraFlex 316 flexible relining for 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.
- DuraFlex 304 flexible relining for masonry chimney. Use with gas, wood pellet, oil, or wood appliances. Applications include: fireplace inserts, furnaces, boilers, and water heaters.
Materials and Construction
DuraFlex Pro: Single-wall .005″ 316 stainless steel.
DuraFlex SW: Single-wall .005″ overlapped 316 stainless steel (totalling .010″). Overlapped to create smooth inner wall.
DuraFlex 316 & 304: Single-wall .005” 316 or 304 stainless steel.
Clearances
DuraFlex Pro: 0″ clearance for gas, oil, and pellet applications. 1″ clearance to masonry for wood-burning applications. Insulation is required for 0″ clearance to masonry for wood-burning.
DuraFlex SW: Clearances 0″ clearance for gas, oil, and pellet applications. ” clearance to masonry for wood-burning applications. Insulation is required for 0” clearance to masonry for wood-burning.
DuraFlex 316 & 304: 0″ clearance for gas, oil, and pellet applications. 1″ clearance to masonry for wood-burning applications. Insulation is required for 0″ clearance to masonry for wood-burning.
Diameters
DuraFlex Pro & SW: 3″ – 12″.
DuraFlex 316 & 304: 3″ – 8″.
Listings
DuraFlex Pro: Listed to UL 1777 and ULC S635 (MH45609).
DuraFlex SW: Listed to UL 1777 (MH45609).
DuraFlex 316 & 304: Listed to UL 1777 and ULC S635 (MH45609).