Features and Benefits: * Two speed belt drive fan * 120V/60Hz * Cut-off protection from overheating * Two rubber wheels allow for easy movement around the shop * UL approved Housing is powder coated with a front and rear rolled formed edge for added strength and rigidity. Permanently lubed and sealed ball bearing construction. 4 balanced aluminum blades for quiet operation. 1 year limited warranty. Power: 631Hi; 509 Low CFM: 14,800 Hi; 11,250 Low RPM: 1082 Hi; 978 Low