Replacement Handle with keyed lock

A contractor from Great Barrington, MA says:
November 22, 2019
I would like to replace this handle with a handle with a keyed lock. Glass has "AGC" etched in corner. 4" centers on handle install screws.
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Tom from SWISCO responded:
November 25, 2019

Hi there! There could be a bunch of potential solutions for you, but the safest bet is to replace your outside handle with our 82-044, and then install our 82-315 on top of it. We even have a video that shows you how these two products interact. Let me know what you think!
Key Lock And Housing
Key Lock And Housing
82-315
$17.25
How to Install a Key Lock on a Patio Door
How to Install a Key Lock on a Patio Door
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