45 Degree Keyway 4-5/8" Screw Holes Minimum Order: One Package (one lock per package). -1/2" Face Plate. Vertical Keyway. This Mortise Lock has a 1/2 inch (12.7 millimeter) wide steel mortise latch with an adjustable bolt throw. This unit can withstand approximately 1000 pounds of force horizontally and vertically to resist a pry bar attack or an attempt to lift the door off of its track. Used with Mortise Style Handle Sets . If a Keeper is needed, depending on the profile of the door jamb, please, use one of the following: E2016 , E2097 , E2085 , E2471 , E2017 , E2015 , E2138 , E2125 , V110S . Minimum Order: One Package (one lock per package).