The Nº 7740MAG full mortise privacy lockset for knobs features a magnetic latch. It shares a common mortise size with other 7700 series locksets for ease of door preparation. The strike requires no lip, allowing the lock to be fully concealed when the door is closed. All Nanz plated and patinated finishes are available. The thumbturn spindle must be cut to extend no further than halfway through the thumbturn hub in order for the emergency release tool to retract the privacy bolt.