Colour Family: BLACK Diameter: N/A . Redirects heat from a single-wall stove pipe back into the room, where you need it Protects walls and ceilings where clearances between flue pipe and walls have been reduced by the use of stove boards The adjustable telescopic feature of the Imperial stove heat shield allows you to extend the length from 22-1/2" to 42" Adaptable to 5", 6", 7", and 8" stove pipe UL/ULC listed Black matte finish