Inline Spring-Loaded Backdraft / Butterfly Damper:8"
- Quality constructed in 28 gauge Galvanized Steel to fit inside round dampers.
- Opens easily with normal air flow and closes with gravity, due to the specially designed angled aluminum damper blades.
- Works in both horizontal or vertical positions.
- Foam seal provides minimal air leakage.
| Series | Inline Spring-Loaded Backdraft / Butterfly Damper |
| Size | 8" |