Progressive, DG30MORTGP, Gold, 1" x 1" x 30" Long, Mortise Cut Out Jimmy Bar - Door Guardian For In Swinging Doors. Heavy Gage Interlock. Mortise Cut Out, Gold, 1" x 1" x 1/8" wrought steel angle bar mounts on door with carriage bolts. "j" channel mounts on frame with self drilling screws. super heavy gauge steel members interlock door and frame preventing: Spreading of frame, insertion of pry bars, shimming of latch. Protects the lock. Resist Forcing the door open. Prevents Shimmying. Binds door to the frame. With Self Drill Screws.