6 in. x 12 in. Adjustable Secure Temp Factory-Built Chimney Length Superior construction techniques and high quality materials make Secure Temp All-Fuel Adjustable Stainless Steel Chimney Pipe ideal for venting wood, oil, coal, and category I gas appliances. An innovative floating flue protects the two stainless steel walls from chimney fires, and a layer of specially designed insulation helps maintain an efficient draft. And because this chimney pipe requires just two inches of clearance, placement options are virtually limitless. Unlike many competing models, Secure Temp All-Fuel Adjustable Stainless Steel Chimney Pipes come with an unlimited lifetime warranty. Secure Temp's manufacturer, the well-known Security Chimneys International, can offer this kind of guarantee because of their emphasis on solid production values. These pipes are constructed with thick walls of premium stainless steel, double-overlapped seams, and secure twist-lock connections, making them extremely resistant to leaks and corrosion. Reliable, efficient, and convenient, this Secure Temp All-Fuel Adjustable Stainless Steel Chimney Pipe makes it easy to create a UL Listed chimney system for almost any heating appliance. Features: Double-wall chimney pipe for wood, oil, coal, and category I gas appliances Stainless steel walls Insulated with 1 in. of specially designed Secura-Plus 2 insulation Secure twist-lock connections 2 in. clearance to combustibles Floating flue protects against chimney fires