... noise,ingenious structure,stable air flow,excellent performance Blower Model: HC-251SCapacity scope: 0.28-0.31m3/minPressure scope: 10-50kpaDischarge ... .55kW Usable voltage: 380V,400V,415VFrequency: 50Hz,60Hz About HC-S: The HC-S series rotary blower features high quality construction, and ...