2-Pack Zinc Box Rail Hanger With 9" Bolt, Designed For Use On Wood Frame, Metal Clad Doors Using A 2" x 4" Or 2" x 6" Frame With National's #59, #5100, #5103, #5104, #5105, #5110, #5114 Or #5116 Box Rail, Includes 2 Washers, Four Hex Nuts, & 2 End Caps Per Pair, Made Of Durable 1 Piece, Precision Formed Steel, The 1/2" Offset Bolt Adjusts Both Vertically & Laterally From Inside Door, Connecting Bolt Threaded 7" Adjusted Laterally 1" By Turning Offset Bolt For Desired Clearance, Boxed.