SWISCO - The Replacement Hardware Authority

Lock replacement

A quick learner from USA says:
I am looking to replace this lock to a keyed lock the dimensions now are 8.5 inches long. 3 and 15/16 from screw hole to screw hole and it is 1 inch wide. It is a double mortise lock
User submitted image of their door hardware.
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Mike from SWISCO responded:
Thank you for posting! Depending on the thickness of the door, you may either use the 82-073 (1-3/8"), or the 82-074 (1-5/8") patio door handle set. We also recommend the 82-265 mortise lock, if you should need that as well. Get back to us and let us know your thoughts.
A home owner from Ma says:
The thickness of my door is . 1 3/4 inches. Would I use the one for 1 5/8? And exactly what other hardware do I need. Is there anything from this existing lock that can be reused?
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Paul from SWISCO responded:
Ah, I see. I'm afraid we don't have a handle set specifically for a door this thick, but you may still be able to get the 82-074 to work. I think the key tail can just about reach the mortise lock. You would, however, need to re-use your old screws.
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