DuraFlex SS Stainless Steel Chimney Liner - 6" x 35-ft. - 6DF316-35: A 6" inner diameter vent pipe is required for this unit. DuraFlex's 35-foot stainless steel chimney liner has a thin metal thickness of .006", making it stronger and more durable than other liners while remaining lighter. The DuraFlex SS flexible masonry chimney relining pipe is designed to work with gas, wood pellet, oil, or wood appliances such as furnaces, boilers, fireplace inserts, and water heaters. These components are UL Listed to UL1777 and are made of 304 stainless steel and 316Ti (titanium) stainless steel.

DuraFlex 35 Stainless Steel Chimney Liner Light-weight .006" metal thickness makes it stronger than other light liners Most economical liner for straight chimneys Manufacturers limited lifetime warranty