Andersen Windows & Door Lock Cylinder, Sliding Glass Patio Door

A handy person from 21102 says:
I'm wanting to replace a locking mechanism that only locks from the inside with a keyed unit. I have what I believe are all the tools to accomplish the task if replacement hardware can be found for mounting a locking cylinder through the exterior side of the door. Any help is appreciated! Latch is currently on the RIGHT hand side of the door when viewed from the outside.
User submitted photos of patio door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:

Take a look at the our 82-319 key cylinder, made for the right hand side (when viewed from the outside). I believe this is the part for your door. It comes with directions for the installation. As for tools, other than a Phillips screw driver you will need a drill and drill bits.

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