ROOF-AVS line is designed to extract large volumes of air, in roof installations. For instance: ventilation of big industrial plants, hangars, power plants etc. It consists of an outer casing, containing the gravity shutter, below which a RING fan shall be fixed.
The shutter opens thanks to the airflow generated by the fan and closes by gravity, preventing rain and wind entrance from outside and the dispersion of heat from inside.
This line consists of 6 sizes with impeller diameter from 560 up to 1000 mm.