Specification Material: Steel, PVC, Copper, Nylon, Die-cast aluminum, Rubber Surface Treatment: Painting, Plastic Spraying Style: Utility Blower Fan, Modern Power Source: AC Color: Yellow Assembly Required: Yes Mount Type: Free Standing Controller Type: Switch Control Model: SHT-30 Number of Items: 1 Number of Blades: 7 Usage: Indoor Plug Type: US Standard Power: 520W Voltage: 110V Frequency: 50/60 Hz Motor Speed: 2800 & 3300RPM Air Flow: 2295 CFM / 65 m³/min Duct Expands Length: 5m/16 ft Duct Thickness: 0.3mm/0.012 inch Duct/Fan Diameter: 30cm/12inch Noise: 71 dB(A) Axial Fan Bearing Type: Ball Bearing Pressure: 373 pa Protective Level: IP44 Current: 4.622A Net Weight: 12.5kg/27.56lbs Gross Weight: 14.5kg/31.97lbs.