Mortise lock with strike plate and keys. The brass faceplate measures 6" tall by 7/8" wide and the brass strike plate measures 4" tall by 7/8" wide with a 1/2" tongue. The lock box measures 4" tall, 5/8" wide and recesses 3". The distance from the center of the knob hub to the center of the round part of the keyhole is a standard 2 1/4". This mortise lock has a standard 2 1/4" backset and is available in 6 different finishes. This mortise lock is mfd. in England and has a manufacturers life time mechanical warranty.