Specification: Voltage/Frequency: 110/50 |\ V/Hz Power: 60| W Sweep: 55 !Inch Base Diameter: 5.9 |Inch Fan Diameter: 42 |Inch Blade Angle: S(straight) © Motor Speed: 2300 | r/min Max. Temperature Arise; <90 K Air volume: 2250 | minim Motor Material: Pure copper Steve Long: 7.