A quick learner from Piscataway, NJ, United States says:
October 21, 2020
Need to replace the lock on my sliding door
Bob from SWISCO responded:
October 26, 2020
See our 82-049 Andersen 3 Panel Thumb latch, as well as the 82-048 3 Panel Latch mechanism and 82-057 Interlock Bracket. See if these parts match what you need.