... with long service and low noise 3.Three speeds 4.Large air volume 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 ... air volume4)Engery-saving and can be used with different power supply:110V-120V/60HZ;220-240V/ ... ",26",30"6) Steel base or plastic base7) Fan's color: can be as per customers' requirments8) ...