1 1/2 HP TEFC Induction Motor Totally enclosed fan, cooled, permanently lubricated motor, provides high performance for long lasting use and dependability.Washable, 1 Micron Filter Bag As an added value, a 1 micron bag is supplied as standard equipment, which gives you superior filtration.Precision Spin-Balanced Impeller The steel impeller is balanced and curved for optimum air velocity, noise reduction and protection to minimize wear.Industrial Push Button Safety Switch Offers increased visibility for additional operator safety and is designed for years of trouble free service.Built-in Casters Heavy duty construction base, mounted on four swivel casters provides excellent maneuverability and total portability from machine to machine or storing out of the way.