DuraVent DuraFlex 3" Diameter Smooth Wall Stainless Steel Flex Liner - 15 Feet: A venting pipe with a 3" inner diameter is required for this unit. DuraVent comes to mind when you think of durability. The DuraVent DuraFlex Smooth Wall Stainless Steel Flex Liner has a smooth wall construction and is comprised of high-quality flexible stainless steel. Because there are no ridges, flue gas flow is unrestricted, making it perfect for relining brick chimneys for wood and gas appliances. The lack of ridges makes cleaning and upkeep a pleasure, so this liner will help your fireplace burn cleaner and more efficiently. The flex liner is available in a variety of lengths, allowing you to find the perfect fit for your masonry fireplace. This season, pick DuraVent for all your fireplace needs. You'll be glad you did.

Size: 3 Inches Color: Stainless Steel Product Dimensions: 3" Dia x 15 H UL 1777 listed 3" diameter and 15 flex length Lack of ridges facilitates cleaning and maintenance Smooth inner-wall flexible stainless steel chimney liner Smooth wall construction eliminates ridges that restrict flue gas flow Ideal for relining masonry chimney for wood and gas burning appliances