HOW FAR ABOVE THE DOORWAY HEADER SHOULD THE AIR CURTAIN BE MOUNTED?
Mount air curtain ½” to 2″ above the door opening whenever possible. The closer to the top of the door opening, the more effective the air curtain will be. Extended mounting brackets are available in various lengths so the air curtain can be mounted to clear an obstruction. If the unit is mounted higher, move it 3/8’’ away from the wall for every 1’’ it is moved above the door.