Blauberg VG 80x50

For automatic shutoff of air ducts installed in various premises when the fan is off.Gravitationally actuated.Compatible with 400x200 up to 1000x500 mm rectangular air ducts.

Galvanized steel case.Equipped with pivoted gravity louvre shutters made of PVC built into a frame.Louvre shutters are opened by air pressure and are closed automatically when the fan is off.

Fixing to rectangular ducts in upright position.  Provide free gravity actuating of the louvre shutters. While mounting into the ventilation system match air flow direction.