This window evaporative cooler is designed to cool areas up to 1600 square feet and is ideal for cooling areas economically and efficiently. This cooler is fully assembled and comes complete with a grille and duct assembly. To install, simply mount in a window, connect to a water supply line and 120 volt electrical line. All metal surfaces are coated with an electro statically applied, UV stabilized polyester powder finish for a beautiful appearance and protection from moisture, chalking and discoloration. Float valve controls water level. Drain pipe assembly allows connection to a water hose to drain the unit. Water inlet uses a 1/4" Water Line (not included) which connects to the float valve (included) for supply water. Made in the USA. This evaporative cooler performs best in dry, arid climates. Dawn Gray Color Finish. Duct Opening Dimensions: 13-1/4" H x 20-3/4" W x 10-1/4" D. Horsepower rating based upon maximum speed/load.