Evaporative cooler, 4600 cfm, side draft duct cooler, cools 800-1700 sqft, motor choice 1/3 hp 4000 industry standard rating, not included or 1/2 hp 4500 industry standard rating, not included, 2 speed motor, aspen pads media, side draft, for use with pps motor #81524, tv #295-623, pps motor #81544, tv #297-135, 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: 34-1/2" x 34-1/8" x 34-1/8" duct opening: 17-3/4" x 17-3/4" x 8-2/16".