Speedi-Products SP-BTC 08 8-Inch Diameter Black Stove Pipe Trim Collar Black Matte It measures 8" Matte Black Stovepipe Collars Made in USA Used for Decorative Trim of Wood Stove appliances and Vent Stacks Consult your local codes for approved installation practices Sturdy 24 gauge construction Consult your local codes for approved installation practices