Sliding Door Mortise Lock - Patriot Patio Sliding Door

A quick learner from Williamstown, NJ says:
I need to replace this mortise lock. Can you help?

Please note: I used the diagram for the measurements only. When the latch is in the UP (locked) position the keyway is at a 45 degree angle.

I think the lock I need is 82-218.

Can you confirm that?

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Tom from SWISCO responded:
We have received your image. If your lock looks the same but has a 45 degree keyway, then the 82-218 is a good place to start. Just double check your dimensions to make sure they match this part.
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