This is our 480 Watt Blower, which isdesigned for medium to large bounce houses. The power rating of this blower is 480 watts which is 0.64 horsepower. This blower is great for other construction applications as well such as drying wet carpet, blowing off sidewalks. Feature High quality Powerful Strong and efficient 480 watt motor Application C For outdoor bounce houses, water slides, obstacle courses, jumpers, and other inflatables Top-mounted handle for easy carry Specification Material: High Grade PE Air outlet diameter:4-1/4'' (outside) Net Weight: about 10 lbs Input: 110V-120V AC / 60HZ 4.2A Power: 0.64 horsepower Wattage: 480W Fate of flow: 393CFM Rotate speed:3300RPM Air pressure:0.24psi Noise:45dB