... Three speeds, large air delivery Stand Powerful Fan:1) Four sizes: 500mm(20"), 600mm(24"),650mm(24"), 750mm( ... 30")2)100% real copper motor with long service and low noise & low temperature rising3) ... for air volume4)Engery-saving and can be used with different power supply:110V-120V/60HZ;220-240V/ ... /50128014002908621.526 FS Series Stand Powerful Fan with Steel Base(20",24",26",30")