The Holyoake Model BDE is a light duty pressure relief damper constructed of extruded aluminium. It operates at low opening pressure differential and with minimal leakage when closed against reverse flow.
Back Draft Damper
- Vertical or horizontal mounting.
- Vinyl blade edge seal.
- Linked blades to avoid flutter.
- Gravity operation.
- Tension springs can be used to provide adjustable resistance to airflow.