Yale 77 Traditional Standard Nightlatch - 60mm Backset, Polished Brass Case/Cylinder FinsihYALE 77 TRADITIONAL STANDARD NIGHTLATCH, 60MM BACKSET, POLISHED BRASS CASE CYLINDER The Yale 77 Traditional Nightlatch features a snib function which allows the latch to be held back or deadlocked internally for everyday convenience. The P77 & 706 are Yale's traditional non deadlocking nightlatches suitable for left & right handed, and inward opening doors with a thickness of up to 57mm. Automatically locks the door once closed. The locks offer