For A Series, and AL Series Lock. Latches 1/2″ throw standard for non-locking and locking functions. 11-068 Spring: 2 3/8″ backset, 2 1/4″(57mm)x1″(25mm) 11-116 Spring: 2 3/4″ backset, 2 1/4″(57mm)x1 1/8″(29mm)