Marks Metro 116A Satin Chrome US26D Entry Right Handed (In-Swing) Thru-Bolted Mortise Lockset With Angled Lever Escutcheon Plates, specially designed with a 2-1/2" backset (from key till end of door), a 1" deadbolt, and a 1-1/16" x 7-5/8" front face plate. This lock operates by key on the outside, and by turn knob on the inside. This lock comes keyed different with two keys per lock.