Chimney Cap Size Fits Outside Flue Width of Fits Outside Flue Length of Screen Mesh Height
8"x8" 6" - 8 1/2" 6" - 8 1/2" 8"
8"x13" 6" - 8 1/2" 11 1/2" - 14" 8"
8"x17" 6 1/4" - 8 1/2" 16 1/2" - 18 1/2" 8"
8"x19" 6 1/4" - 8 1/2" 18" - 20" 8"
10"x17" 8" - 10 1/2" 16 1/2" - 18 1/2" 8"
13"x13" 11" - 13 1/2" 11" - 13 1/2" 8"
13"x17" 11 1/2" - 16 1/2" 13 1/2" - 18 1/2" 8"
13"x21" 11" - 13 1/2" 19" - 21 1/2" 8"
17"x21" 15" - 17 1/2" 19" - 21 1/2" 8"