The DuraVent 7DT-36SSCF is a chimney pipe from the DuraTech collection, a double-wall chimney system that can be used with fireplaces, wood stoves, furnaces, water heaters, ranges, boilers and other appliances. This chimney pipe is designed to be used for appliances that are tested and listed for use with a 2100-degree Fahrenheit chimney system. Made with stainless steel construction, this measures 36 inches in length, inner diameter of 7 inches, and outer diameter of 9 inches. It also includes a carton filler for shipping when being purchased. This is a UL-listed product and also includes DuraVents limited lifetime warranty.Search only for the best and high-quality products for your vent system. In cooperation with DuraVent, PlumbersStock.com has everything you need at affordable prices. Go find yours now here at PlumbersStock.com!