Chimney Damper Flue Extension
You may need a Flue Extension to install your top mount chimney damper if there is no existing flue tile extending from the chimney top or the flue tile is too short. The extension pieces are 4 inches tall. Easily bolts to the flue extension with tapcon screws (purchased separately).
Sizing
| Optional Adapter Size | Actual Inside Dimensions |
| 8" x 8" | 7.92" x 7.92" |
| 8" x 13" | 7.92" x 12.92" |
| 8" x 18" | 7.92" x 17.92" |
| 12" x 12" | 11.92" x 11.92" |
| 13" x 13" | 12.92" x 12.92" |
| 13" x 18" | 12.92" x 17.92" |
| 18" x 18" | 17.92" x 17.92" |
Original: $139.99
-70%$139.99
$42.00Chimney Damper Flue Extension
You may need a Flue Extension to install your top mount chimney damper if there is no existing flue tile extending from the chimney top or the flue tile is too short. The extension pieces are 4 inches tall. Easily bolts to the flue extension with tapcon screws (purchased separately).
Sizing
| Optional Adapter Size | Actual Inside Dimensions |
| 8" x 8" | 7.92" x 7.92" |
| 8" x 13" | 7.92" x 12.92" |
| 8" x 18" | 7.92" x 17.92" |
| 12" x 12" | 11.92" x 11.92" |
| 13" x 13" | 12.92" x 12.92" |
| 13" x 18" | 12.92" x 17.92" |
| 18" x 18" | 17.92" x 17.92" |
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
You may need a Flue Extension to install your top mount chimney damper if there is no existing flue tile extending from the chimney top or the flue tile is too short. The extension pieces are 4 inches tall. Easily bolts to the flue extension with tapcon screws (purchased separately).
Sizing
| Optional Adapter Size | Actual Inside Dimensions |
| 8" x 8" | 7.92" x 7.92" |
| 8" x 13" | 7.92" x 12.92" |
| 8" x 18" | 7.92" x 17.92" |
| 12" x 12" | 11.92" x 11.92" |
| 13" x 13" | 12.92" x 12.92" |
| 13" x 18" | 12.92" x 17.92" |
| 18" x 18" | 17.92" x 17.92" |
