Model Size Minimum Outer
Dimension of Flue Tile
Maximum Outer
Dimension of Flue Tile
8" x 8" 6.75" x 6.75" 9" x 9"
8" x 17" 6.25" x 14.5" 8.75" x 16.75"
9" x 13" 6.5" x 10.5" 9" x 12.75"
13" x 13" 10.125" x 10.125" 12.75" x 12.75"
13" x 18" 9.625" x 15" 12.75" x 17.5"
18" x 18" 15" x 15" 17.75" x 17.75"