Electric dryer fan with power up to 20kW for heating and drying buildings with maximal air flow up to 2300m3/h. It is intended to cover an area up to 350 m2 volume up to 1225 m3, at -13 °C outside to 15-18 °C inside, with normal insulated walls in the building with a ceiling height up to 3m. This heater is equipped with 3Ph 32A socket and the power supply cable should be ordered separately. Electricity connection (400V) is required