The DuraVent 8DLR-36HF is a 36-inch double-wall flexible chimney pipe from the DuraLiner Collection. This chimney pipe is designed and made to be used as a connector with a flexible section. It comes in a stainless steel finish for added resistance against corrosion. It also features an 8-inch inner diameter. This chimney liner is backed by the manufacturer's limited lifetime warranty. It is UL certified for meeting the standard for safety. DuraVent is known to be the leader in providing innovative solutions for the venting industry. In cooperation with DuraVent, we at PlumbersStock carry high-quality products like this flex pipe for a very affordable price.