Blower, Centrifugal Fan,Ventilation, Ventilator Fan, Air Mover, Air Moving, Air Condition, Air Conditioning Features: 1) Low noise, hi-efficiency, light and reliable operation 2) Application: general ventilation of high buildings and factories Specification: 1) Fan diameter: 280 - 2,800mm 2) Air volume: 2,200 - 300,000m³/h 3) Air pressure: 300 - 2,500Pa