The HCD-75 is a precisely made volume and pressure control device with extremely low leakage when closed. The damper is more likely to be used in small ducting areas and has been specifically designed to be installed using 25mm proprietary duct flanging systems.
High temperature HCD-75-ET version available suitable for smoke applications.
With options of being either manually operated or motorised, the HCD-75 is custom made to suit the clients requirements.