Material: Galvanized Steel Sheet
Size( W×H): According to air duct sizes
Features:
Usually it is open, when the airflow temperature in the air duct getting up to 70 degree, then the fuse acts, and the damper is automatically closed.
Manual open and close is available, and manually reset the damepr after the damper acting.
The damper has sixe gears of regualting air volume damper.
Once the damper is closed, outputing the close electric signal (DC24V).
Having the certification of ISO9001:2008.