Colour Family: BLACK Assembled Product Length: 7" Assembled Product Height: 7.5" Assembled Product Width: 7.5" Diameter: 7" . Used to offset double wall stove pipe toward insulated chimney DIMENSIONS: Top inner wall diameter: 7" Top outer wall diameter: 7-1/2" Bottom inner wall diameter: 6-29/32" Bottom outer wall diameter: 7-1/2" Length: 7"