Product Details
**Overhead Door Holder - #1688 Drop Plate:
**Top Jamb:For use where aoverhead door holder prevents normal top jamb mounting.This places the center line of the arm mounting screws at3-1/2" (89mm) from the top of the door.
Parallel Arm:Foruse where a narrow top rail prevents the closerfrom being mounted directly to the door surface.This drop plate can be used to mount a closer on atop rail as narrow as 3-1/8" (79mm) in height for1600BC.