Features: 1) Dimension: 220*220*60mm 2) Voltage: 110V,220V 3) Bearing type: ball bearing 4) High efficiency and low noise 5) Large volume flow and long life expectancy Features: 1) Dimension: 220*220*60mm 2) Voltage: 110V,220V 3) Bearing type: ball bearing 4) High efficiency and low noise 5) Large volume flow and long life expectancy