Handing : Non-handed Door Thickness : 1⅜"to 1⅞(35mm to 48mm)standard Backset : 2¾"(70mm)standard. 2⅜"(60mm)optional. Front : Brass. 1⅜"x 2¼ square corner, beveled, for 2¾ backset standard. Optional 1" square corner, beveled for 2⅜" backset. Lock Chassis : Steel, zinc dichromate plated for corrosion resistance. Latch Bolt : Brass, Nickel plated, ½" throw, deadlocking on keyed and exterior functions. Exposed Trim : Wrought brass and bronze, Levers are pressure cast zinc, plated to match finish symbols. Strike : ANSI curved lip strike 1¼" x 4⅞" x 1⅜"(32mm x 124mm x 30mm) lip to center standard. Optional T-strikes 1⅛" x 2¾" x 1¼"(29mm x 70mm x 32mm) lip to center and strike box available. Cylinder & keys : 5 and 6pin Schlage C keyway standard with two brass keys per lock.