... fan -Huge air volume, Low noise, Good energy saving, Little fault -reduce the indoor temperature to less than ... Light weight, High intensity, Quick assemble, Anti-corrision - Motor of 380/220V, 50HZ,3 Phase, IP 55, ... E Class - Each motor is individually tested for 100% quality control. -Our shutter ... '/40'GP/40'HQ150/240/280 power saving industrial air cooling and ventilation system