The DuraVent 22DT-12 is a triple wall chimney pipe from the DuraTech Collection. This class A chimney pipe is made for use with appliances fueled by wood, oil, coal or gas. It is also compatible with a different application such as wood stoves, fireplaces, furnaces, boilers, stoves, and water heaters. This chimney pipe features a 22-inch inner diameter and a 12-inch length. It is also made of stainless steel for added resistance to mechanical damage. This chimney pipe 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 chimney pipe for a very affordable price.