DuraFlex SS Stainless Steel Chimney Liner - 5.5" x 35 Foot - 55DF316-35: A 6" inner diameter vent pipe is required for this unit. For straight chimneys, the DuraFlex SS stainless steel chimney liner is the most cost-effective option. With this vast length, there are no connecting elements. It is simple to unroll and install. Dura Flex SS stainless steel chimney liners have a thin metal thickness of 0.005", making them stronger than other light chimney liners. DuraFlex SS is compatible with gas, wood pellet, oil, and wood-burning appliances. This liner offers a 0" clearance to masonry when properly insulated with the DuraFlex Zero Clearance Insulation Sleeve for wood burning applications.

DuraFlex 35 Stainless Steel Chimney Liner 5.5" diameter Light-weight .005" metal thickness makes it stronger than other light liners Most economical liner for straight chimneys Manufacturers limited lifetime warranty