Sliding glass door lock and handle

A quick learner from Ponte Vedra Beach, FL says:
I need to replace the locking mechanism to my sliding door. The opening for the part is 7 1/16 inches long, and the face of the part is 7 1/8 inches long. It has markings on the inside that say PAT 3390557.U.S. and RD 1968 CAN. The lock has both an ON/OFF switch that is black and a sliding lock that is white and says "LOCKED" on it. My handle is still in good shape, so if I can just replace the locking parts, that would be great.
User submitted photos of patio door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Take a look at our 82-002W. That could be the lock you are looking for. Match it up to the what you are replacing to be sure.
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