The DuraVent 55DFPRO-35 is a flexible chimney liner. It is from the DuraFlex Series, a collection that provides flexible chimney pipes and venting accessories. Appliances fueled with wood, gas, and pellet are compatible with this chimney liner. It is also designed to connect to a tee or an adapter. It has a stainless steel finish for added resistance against corrosion. This liner also comes with flexible components that add flexibility for easy installation. It features a 5.5-inch inner diameter and has a length of 35-foot. This chimney liner is backed by the manufacturer's limited lifetime warranty. It is also a UL listed for meeting the standard for safety. Here at PlumbersStock, we take pride in offering our customers high-quality products like this chimney liner at very affordable prices.