DuraVent 5.5" Inner Diameter DuraFlex SS Reducer
The DuraVent 5.5" Inner Diameter DuraFlex SS Reducer is a durable chimney liner adapter accessory designed to provide a secure transition between DuraFlex stainless steel liner components and compatible venting connections. Engineered for dependable chimney relining applications, this reducer helps maintain proper flue gas flow, chimney draft, and venting efficiency for wood-burning, non-condensing gas, and oil-fired appliances.
Built to complement DuraFlex 304, DuraFlex 316, DuraFlex Pro, and DuraFlex SW chimney liner systems, the stainless steel reducer offers excellent durability and corrosion resistance. Ideal for fireplace inserts, masonry chimney restoration, and stainless steel chimney liner installations, it provides a reliable connection solution that supports safe, efficient, and long-lasting venting performance
Features
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DuraFlex SS Reducer Adapter: Designed to connect a 5-1/2" DuraFlex stainless steel chimney liner length to a 6" appliance outlet for reliable chimney venting system installation.
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Secure Vent Transition: Provides a durable connection between flexible chimney liner and appliance venting components, helping support proper draft and flue gas flow.
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Versatile Masonry Wall Application: Can also be used to connect DuraFlex SS liners to stovepipe for through masonry wall chimney installations.
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Supports Fireplace & Stove Installations: Ideal for wood-burning stoves, fireplace inserts, and chimney relining projects requiring a dependable vent size transition.
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Maintains Chimney Performance: Helps promote efficient chimney airflow, venting efficiency, and safe appliance operation when properly installed.
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Appliance Manufacturer Approval Required: Always verify with the appliance manufacturer before reducing vent size to ensure proper safety, performance, and code compliance.
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Durable Stainless Steel Construction: Built for long-lasting performance and corrosion resistance in residential chimney liner systems and professional venting applications.
Specifications
| Model |
Size |
| 6DFS-X55 |
5.5" I.D x 6" O.D x 4.125" Height |
| 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 |
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