Specifications Model: BT-WL18B Quantity: 2 Noise Level: 60 dB Waterproof Rating: IP44 Speed Settings: 3 Air Speed: 25 ft/s (7.5 m/s) Air Volume: 3450/3700/4150 CFM Fan Blades Diameter: 18 inch / 45.7 cm Material: All Metal Power: 90 W Voltage: AC 120 V / 60 Hz Package Content 1 x Industrial Wall Fan 1 x User Manual