Chimney Pipe; Type Double Wall, Fuel; Applicable Standard UL (Canada and US), ULC S629, UL 103HT, NFPA 211; Size 8"; Length 6"; End Type Twist Lock x Twist Lock; Material Thickness 0.015" Inner Wall, 0.012" Outer Wall; Material 430 Stainless Steel; Temperature Rating 1000 Deg F; Insulation Supplied Yes; Inclusions/Features Integral, Annular Insulating Air Space, Factory-Built, Corrosion Resistant; Air Insulated Pipe Size 1-1/2"; Application Wood, Coal, Oil, Gas Fired; Insulating Material Ceramic; Warranty Lifetime Limited