Devices enabling gravitational exchange of air in industrial facilities and public buildings, assembled in curved bands of light or a spot in the roof, which can meet at the same time the role of the roof hatch.
Opening the flap is done by means of an electric actuator 230V desired by the customer extension, load or manually with supporting cylinders oleopneumatycznych. When opening the mechanical actuators can be connected to the central control ventilation cooperating with the weather sensor wind / rain.
The construction of flaps: raw aluminum or powder coated to any RAL color.
Filling: PC board chamber with a thickness of 10 to 25 mm