| Chimney Cap Size | Fits Outside Flue Width of | Fits Outside Flue Length of | Screen Mesh Height |
| 9" x 9" | 7 1/2" - 9 1/2" | 7 1/2" - 9 1/2" | 8" |
| 9" x 13" | 7 1/2" - 9 1/2" | 11 1/2" - 13 1/2" | 8" |
| 8" x 17" Oval | 7 1/2" - 9 1/4" | 16 1/2" - 18 1/4" | 8" |
| 13" x 13" | 11 1/2" - 13 1/2" | 11 1/2" - 13 1/2" | 8" |
| 10" x 17" Oval | 9 1/2" - 11" | 16 1/2" - 18 1/4" | 8" |
| 13" x 17" Oval | 11 1/2" - 13 1/4" | 16 1/2" - 18 1/4" | 8" |
| 13" x 21" Oval | 12" - 13 1/2" | 20" - 22" | 8" |
| 17" x 21" Oval | 16" - 17 1/2" | 20" - 22" | 8" |
| 8" x 20" Oval | 6 1/2" - 8 1/8" | 17" - 19" | 8" |
| 9" x 21" Oval | 7 1/8" - 9 1/2" | 19 1/8" - 21 1/8" | 8" |