Chimney Cap Size Fits Outside Flue Width of Fits Outside Flue Length of Screen Mesh Height
8" x 8" 6 1/2"" - 8 1/2" 6 1/2"" - 8 1/2" 8"
8" x 13" 6 1/2"" - 8 1/2" 11 1/2" - 13 1/2" 8"
8" x 17" 6 1/2" - 8 1/2" 16 1/2" - 18 1/2" 8"
13" x 13" 11" - 13 1/2" 11 1/2" - 13 1/2" 8"
13" x 17" 11 1/2" - 13 1/2" 16 1/2" - 18 1/2" 8"
17" x 17" 16 1/2" - 18 1/2" 16 1/2" - 18 1/2" 8"