... size, low noise,ingenious structure,stable air flow,excellent performance Blower Model: HC-251SCapacity scope: 0.28-0.31m3/minPressure ... Usable voltage: 380V,400V,415VFrequency: 50Hz,60Hz About HC-S: The HC-S series rotary blower features high quality construction, and ... includes the following components: motor, air filter, main blower unit, air chamber, common base (with lube oil tank) ...