Size: 8". Product Dimensions: 20" Dia x 1/2" H. 0/12 to 3/12 pitch. 2" clearance to combustibles. Trim collar for roof support with 8" diameter: A venting pipe with an inner diameter of 8" is required for this unit. There aren't any locking bands or mechanical fasteners needed. Designed for normal continuous operation at flue gas temperatures of 1000 degrees Fahrenheit. For use with wood stoves, fireplaces, furnaces, boilers, ranges, water heaters, and other wood, coal, or gas-fueled appliances. A venting pipe with an inner diameter of 8 inches is required for this unit. Have the aesthetics of your piping in your home been less than ideal? Are you looking for a way to conceal your pipes from curious eyes? Then this Trim Collar from DuraVent's DuraTech collection is ideal for you! When used with roof support, this device will completely conceal the gap between your chimney pipe and the ceiling cutout. So, if appearances are important to you, make your move now!

Size: 8 Inch Product Dimensions: 20" Dia x 1/2" H 0/12 to 3/12 pitch 2" clearance to combustibles Trim collar for roof support with 8" diameter No locking bands or mechanical fasteners required Designed for normal continuous operation at 1000 degree Fahrenheit flue gas temperatures For use with wood stoves fireplaces furnaces boilers ranges water heaters or other appliances fueled by wood oil coal or gas