Specifications Model: BT-WL18A Quantity: 2 Noise Level: 60 dB Speed Settings: 3 Air Speed: 23 ft/s (7 m/s) Air Volume: 3000/3550/4000 CFM Fan Blades Diameter: 18 inch / 45.7 cm Material: All Metal Power: 73 W Voltage: AC 120 V / 60 Hz Package Content 1 x Industrial Wall Fan 1 x User Manual