Dimensions:172*150*51mm This type of fan enjoy high airflow and lower noise ,best been used for oil cooling etc. Descriptions:1.Dimensions: 172×150×51mm 2.Rated Voltage: 48V3.Operating Voltage Range : 28.0~56.0V4.Bearing Type: Duall ball bearing5.Current Amp:0.38A6.Rated Input Power:18.24W7.Rotation Speed: 3000rpm8.Max Air Flow:220.00CFM9.Max Static Pressure: 0.80Inch-H2O10.Noise Level:52dB-A11. ...