Designed for ventilation installations, CAR backdraught dampers prevent the entry of outside air into the premises in the event of the fan stopping.
The damper flaps are in the open position when the fan is operating and close automatically when the fan stops.
The backdraught dampers are mounted by a simple interlocking system in the duct, a foam seal ensuring the tightness.
In the case of mounting on a vertical duct, the shutters must open upwards.
Make sure that the installation direction is such that the shutters are in the open position when the fan is on.



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