Patio door handle and latch replacement

Question

Hi there. I am looking to upgrade my sliding patio doors to a key lock handle. Unfortunately the current locking mechanism/latch itself is no longer working, so I need to replace the entire set, or just the latch plus adding a key. Could you help me identify which part(s) I need to do the entire replace of handle, locking mechanism/latch, and adding a key? Would be great if there is an all in one kit since I am not really dead set on keeping the handle and we arent experts in mucking with the guts of current setup. Prederably keeping it white color.
I've included pictures showing the measurements on the interior door (3 15/16") and the guts of the door (3 5/8") from screw hole to screw hole for your convenience. Thanks in advance for the support!

Jasmine · Accepted Answer

Your handle set has a very similar design to the 82-030A Centered Keyed Handle Set. I believe your key lock and latch lever should be centered but you'll need to double check.

The mortise lock, sold separately from the handle set, appears to be a match for the 82-218 Mortise Lock. For the keeper I suggest reviewing and comparing either the 89-029 or the 89-041.

The dimensions for each of these parts can be viewed directly on the website.