Choose Backset and Handing Backset: The distance between the edge of the door and Center of the key cylinder. Pacific Doorware Deadlatch Lock Designed for Narrow Stile Storefront Doors Includes Deadlatch Lock, Faceplate Faceplate Dimensions 6-7/8" x 1" Please verify the size and handing prior to ordering. Replacement Deadlatch Mortise Lock and faceplate for Storefront Doors.