VEVOR Wall Mount Fan, 2 PCS 20 inch Oscillating, 3-speed High Velocity Max. 4000 CFM Industrial Wall Fan for Indoor, Commercial, Residential, Warehouse, Greenhouse, Workshop, Basement, Garage,BlackDesigned for Large Spaces3-speed SettingsPowerful AirflowEasy InstallationVersatile ApplicationManual Angle AdjustmentNoise Level: ≤60 dB,Speed: 1450 RPM,Air Speed: 23 ft/s (7 m/s),Air Volume: 3500/4000/4650 CFM,Voltage: AC 120 V / 60 Hz,Model: BT-WL20A,Fan Blades Diameter: 20 inch / 50.8 cm,Quantity: 2,Cover Area: 30 ft / 9 m,Material: All Metal,Speed Settings: 3,Power: 70 W