Champion 4900 CFM DownDraft Roof Evaporative Cooler for 1800 sq ft Motor Not Included Designed for use with 13 or 12 hp, 1speed and 2speed motors sold separately Uses dependable aspen pads Easy connect to water supply for continuous operation, Galvanized steel cabinet provides durability, Tough, polyesterresin coating on exterior surface and Onepiece bottom pan for leakproof operation keeps maintenance low