Feature●The LG100Z latch protector is manufactured using heavy 12 gauge plate steel for maximum security. Zinc plated with brushed finish. Holes are 9-5/8" Center to Center●Tamper Resistant, Special Fasteners (SF710) which allow for a quick and easy, flush inside Installation. This prevents weatherstrip from sealing incorrectly or clothing being snagged●Latch-Gard steel plates completely covers latch area so latch bolt cant be retracted; Jamb Pin prevents horizontal or vertical prying of door●Reversible for right or left openings. Installation requires drilling only three holes●Intended for 1-3/4" thick doors, Outward Swinging Exterior Commercial Steel or Wood Doors with Mortise Lock, may also work with Cylindrical Knob locks with small roseDescription SPECIFICATIONS: Plate: 12 gauge steel, .105" thick. Two square holes in plate. 5/8" in from top and bottom, and 5/8" in from side. Bolts: Two carriage bolts 5/16-18 x 1-1/2" long with special fasteners (SF710). Jamb Pin: 1/2". Finish: Zinc plated with brushed finish. Latch-Gard products are made in the U.S.A. using high quality materials. This Model is also available by quote without Jamb Pin.