Evaporative cooler, 6500 cfm, side draft duct cooler, cools 1400-2300 sqft, motor choice 1/2 hp, motor not included, 5500 industry standard rating, for 3/4 hp 6500 industry standard rating, 2 speed motor, aspen pads media, side draft, for use with pps motor #81544,tv #297-135, pps motor #81564, tv#293-123, pps pump #p-7g, tv#111-507, pps pump #m-7500, tv #781-925, 8 year limited warranty on cabinet, powder coated for durability. cabinet dimensions: 42-7/16" x 39" x 39", duct opening: 19-3/4" x 19-3/4" x 9-5/8".