Seeking to replace the inside and replace the outside with a keyed entry.

A handy person from Pennsylvania says:
The interior handle mounting screws are just under 5 inches apart and this is a surface mount lock. The objective is to make the exterior a keyed entry.
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Thumbnail of the uploaded file named Sliding door inside door open.jpg
Thumbnail of the uploaded file named Sliding door inside.jpg
Thumbnail of the uploaded file named Sliding door outside.jpg
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Casey from SWISCO responded:

Hello,

Your exterior pull has a punchout that should accept our 82-310 key lock. Take a look and let us know if you have any other questions or concerns. 

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