The CHAMPION ducted evaporative cooler features a blower wheel design with self-aligning bearing for efficient, quiet operation. Easy-to-adjust and water-resistant water trough. Durable heavy-gauge galvanized steel cabinet. This industrial/commercial ducted unit with drive motor includes drive pulley, aspen fiber evaporative pad, motor, pump, float, and bleed-off kit. Side discharge. Single-phase, 115/208-230V. AMCA rated. UL Classified.