Place of origin: Jiangsu, China Fan type: Forward Curved Centrifugal Fan Model no.: HF140-072D024M HF140-072D048M Rated Voltage: 24VDC 48VDC Impeller Size: Ø140*72mm Rated Speed: 1750RPM Air Flow: 370M³/H Brand Name: HEKO Motor Type: Brushless DC(BLDC) external rotor motor