exhaust fan : Model SizeVoltage/frequencyPowerMotor statorSpeedFQ-2510"250mm220V/50HZ100W88*241350r/minFQ-3012"300mm220V/50HZ120W88*241350r/minFQ-3514"350mm220V/50HZ180W120*161350r/minFQ-4016"400mm220V/50HZ240W120*201350r/minFQ-5020"500mm220V/50HZ560W120*241350r/minFQ-6024"600mm220V/50HZ730W120*321350r/min 1) Adopt wind power engineering theory ,Strong wind, low noise,durable and mute motor with protection ,stable running. 2) Be suitable for workshop, warehouse ,restaurant and so on. It can be sunstroke prevention and reduce the temperature, ventilating and improve the environment.