DuraFlex SS Stainless Steel 316 Alloy Chimney Liner - 6" x 15-ft. - 6DF316-15: A 6" inner diameter vent pipe is required for this unit. This item includes 15 feet of DuraFlex stainless steel chimney liner with a 6" diameter. This liner is thin and light, yet its 0.006" thickness makes it stronger than many other light liners on the market. For straight chimneys, the DuraFlex system is the most cost-effective liner. The item comes with a limited lifetime warranty from the manufacturer. To fulfill the UL 1777 requirement for wood burning stoves and brick chimneys, use the DuraFlex Insulation Sleeve.

DuraFlex 15 Stainless Steel 316 Alloy Chimney Liner 6-in. diameter Light-weight .006" metal thickness makes it stronger than other light liners Most economical liner for straight chimneys Manufacturers limited lifetime warranty