Size: 6". Product Dimensions: 14" W x 14" H. 2" clearance to combustibles: A vent pipe with a 6" inner diameter is required for this unit. There's no need for locking bands or mechanical fasteners. For an extra margin of safety, the inner wall is 25% thicker than competing chimneys. 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. Thimble isn't included. Are you concerned that your pipe system will deteriorate over time? Do you wish there was a way to prevent that from occurring? You've come to the correct location if that's what you're looking for. DuraVent's DuraTech Exterior Trim Wall Thimble will fit right over your 6" diameter piping, giving a robust fixed aperture and an exact mounting surface to eliminate the potential of deformation. With inner walls that are 25% thicker than the competition, you can rest assured that the parts designed to prevent distortion will not deform. Make the switch today if you want a worry-free installation!

Size: 6 Inch Product Dimensions: 14" W x 14" H 2" clearance to combustibles No locking bands or mechanical fasteners required Exterior trim wall thimble for piping with 6" diameter Inner wall is 25% thicker than competitive chimneys for an extra margin of safety 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