ABH 1000SA Concealed Mount Heavy Duty Slim Line Adjustable Overhead Holder - Hold OpenThe ABH 1000SA Series Slim Line Adjustable is designed for aluminum store front doors and is field adjustable after installation from 85 to 110 (5 increments). Hold Open Function Door will stay held open at the selected degree of opening. Hold open adjustment screw controls the amount of force required to disengage the hold open mechanism. Overhead holders and stops are used to prevent unnecessary damage to the door, frame, wall and other door