DuraVent | Pipe DuraFlex 25' Flex SW Stainless Steel Length
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The DuraFlex SW, featuring a smooth inner-wall design, redefines chimney liners. Its unique construction ensures no reduction in output, allowing your appliances to operate at peak efficiency. Say goodbye to ridges that hinder flue gas flow and collect deposits; the smooth wall eliminates them, making cleaning and maintenance a breeze. Designed to reline masonry chimneys, this stainless steel wonder accommodates both wood and gas-burning appliances. Rest assured, it's UL 1777 listed for your peace of mind.
When it comes to flexibility, we put you in control. Customization is at your fingertips, with the option to order lengths to suit your needs. Our DuraFlex Pro and DuraFlex SW range even offers diameters from 9" to 12" for custom lengths. Flexibility meets perfection with Ventinox components for all 9"-12" flex systems.
DuraFlex SW's smooth wall flexible design makes it perfect for relining masonry chimneys. It's a versatile choice compatible with gas, wood pellet, oil, or wood-burning appliances. Common applications include fireplace inserts, furnaces, boilers, and water heaters.
Model | Size | Flex Length |
3DFSW-25 | 3" I.D | 25 ft. |
4DFSW-25 | 4" I.D | 25 ft. |
5DFSW-25 | 5" I.D | 25 ft. |
55DFSW-25 | 5.5" I.D | 25 ft. |
6DFSW-25 | 6" I.D | 25 ft. |
7DFSW-25 | 7" I.D | 25 ft. |
8DFSW-25 | 8" I.D | 25 ft. |
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 |
Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.The company’s research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro.
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