The Bon-Aire Durango Window/Wall Evaporative Cooler helps provide whole house cooling. The 1/3 HP axiel fan works quietly and efficiently to cool a space between 1,600 sq. ft. and 1,800 sq. ft. This slim cabinet cooler is designed to be installed in a window that measures between 20-1/2 ? 22-1/2 in. wide and at least 20-1/2 in. high. This cooler features a cooling pad which helps cool and purify the air in a room. The evaporative cooler has 3 speed settings helping you adjust your level of cooling.