DuraFlex 25 Stainless Steel Chimney Liner 6" diameter: The lightweight 006" metal thickness makes more durable than other light liners. The most cost-effective liner for straight chimneys. Limited lifetime warranty from the manufacturer. A 6" inner diameter vent pipe is required for this unit. The DuraFlexs SS stainless steel chimney liner is critical to your fireplace's effective ventilation. This sturdy 6" x 25-foot chimney liner functions as a barrier to protect the chimney from material in the flue causing harm. It is simple to operate, due to its adaptable design. It works with gas, wood pellet, oil, and wood-burning appliances such fireplace inserts, furnaces, boilers, and water heaters. DuraFlex also provides a limited lifetime warranty.

DuraFlex 25 Stainless Steel 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