Dayton Air Curtain Blowers are designed to be used in combination with Dayton Air Curtain Cabinets. Together with the Air Curtain Motor, they create a Dayton Air Curtain. These air curtains produce a wall of continuously flowing air that provides a thermal barrier against outside air and prevents heated or cooled air from escaping through open doorways. It reduces humidity and loss of cold air when used over the doors of freezers and coolers. High traffic area doors can be left open, keeping flying insects out and eliminating the nuisance of automatic or manual doors opening and closing.