Dayton air curtain blowers are used for restricting contaminants and air to move between two open spaces. These air curtains produce a continuous flowing air wall to prevent escaping of cooled and heated air through open doorways and provide a thermal barrier for outdoor air. These Dayton blowers reduce the loss of cold air and humidity when used over cooler and freezer doors. Dayton air curtain blowers allow leaving traffic area doors open, eradicating the inconvenience of manual or automatic opening & closing of doors. Choose from a wide variety of these Dayton blowers, available in heights of 9.75 & 10.75 inches with single or three phase motors on Raptor Supplies.