Non Return Damper
Non-return backdraft shutter.
Model: BD Range
Order Code: See technical data for further details
Air-stream operated for installation in-line with circular ducting.
| Model | Code | Size |
| ALVBD10 | ALV339 | 100mm |
| ALVBD12 | ALV356 | 125mm |
| ALVBD15 | ALV357 | 150mm |
| ALVBD20 | ALV358 | 200mm |
| ALVBD25 | ALV359 | 250mm |
| ALVBD30 | ALV360 | 300mm |
Backdraft shutter, air-stream operated for installation in-line with circular ducting.
