Smooth Wall Flex Liner Kits

DuraFlex SW comprises a flexible stainless steel chimney liner with a smooth inner wall that maintains full appliance efficiency without any reduction in output. The liner's smooth wall construction removes ridges that restrict flue gas flow and collect deposits, making it easier to clean and maintain. DuraFlex SW is perfect for masonry chimney relining for wood and gas-burning appliances. It is also UL 1777 certified.

DuraFlex SW is a smooth wall flexible relining that is suitable for masonry chimneys. This product is compatible with gas, wood pellet, oil, or wood appliances and can be used in various applications, such as fireplace inserts, furnaces, boilers, and water heaters.

The DuraFlex SW features a single-wall made of 316 stainless steel that measures .005 inches in thickness. The material is overlapped to produce a smooth inner wall and the total thickness of the overlap is .010 inches.

DuraFlex SW allows for 0" clearance in gas, oil, and pellet applications, and 1" clearance to masonry in wood-burning applications. It is mandatory to use insulation for 0" clearance to masonry in wood-burning applications.