DuraVent DuraFlex Stainless Spacer: keeps an unwrapped wood liner clear of the masonry
The DuraVent DuraFlex Stainless Spacer is a ring that clips around a chimney liner to hold it 1 inch away from the masonry. Several rings spaced along the liner keep it centered inside the chimney. This leaves the air gap an unwrapped wood burning liner needs. DuraFlex Stainless is DuraVent’s flexible stainless steel liner for relining a masonry chimney that vents a wood, pellet, oil, or gas appliance. The spacer also fits flexible sections of DuraLiner. Choose a 5, 6, 7, or 8 inch size on this page to match your liner.
A gas, oil, or pellet liner can touch the masonry without insulation. For wood, a half inch wrap of ProFoil blanket replaces the air gap and allows the liner to be listed for direct contact with masonry. Wrapped liners do not need these spacers. Insulation also helps draft and reduces condensation with any fuel, especially in a cold, exposed chimney. A chimney professional should check the old masonry’s clearance from your house framing. Wrapping instead? See the DuraVent DuraFlex Stainless ProFoil blanket. The DuraVent DuraFlex Stainless Spacer ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 5DFS-S | 6DFS-S | 7DFS-S | 8DFS-S
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).