These industrial fans feature a quiet 2-speed motor with thermal cutoff for overheat protection. DBA rating 62 Low Speed / 69 at High Speed, DBA measured by using IEC 60704 Standard. Blower fans have a roller bearing motor that is heat resistant and maintenance-free. The sturdy steel housing of these portable floor fans have formed channels for enhanced rigidity, a grip handle for portability and a powder coat black finish. Grills have curved grid supports. 18'L 3-conductor power cord with plug. 120V. Features 3 blades. Fan tilts to direct airflow vertically and tightens in place with a screw knob. 5" rubber wheels. This product is designed to operate between 32-104 degrees Fahrenheit. UL, cUL Listed. Meets OSHA and UL507 Standards. Horsepower rating based upon maximum speed/load. This product has limited warranty of 1 year.