Designed for applications requiring a maximum amount of output. Housing is made from 16-gauge cold rolled steel and powder-coated in a “safety orange” color that holds a three-blade impeller. It features an interchangeable flange for intake or exhaust mounting, integrated carry handles for easy transport, a steel/zinc plated grill and 4 rubber feet.?UL Listed. Certified to CSA Standard C22.2 No.113.