Patio Door hardware

A home owner from USA says:
Please review attached to see if you have it or a suitable replacement
User submitted photos of door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
The handle you show in your photo looks like our 82-400 Atrium handle, but I'm not sure if this can work. The mortise lock face plate is rounded on ours, while yours is squared. Do you know the manufacturer of your door? That might help us identify a better match.
A quick learner from Wilmington DE says:
I need four of these --Part number 82-400
If rounded versus square is the only issues and it simply means I have to cut a space in the door is it likely to work.

If I buy one to test can I then order rest and get the 4 unit price.

Will the lock assembly likely work.

I return if the lock assembly does not fit.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Okay, great. If you are willing to test it out we would love to know the results. I cannot guarantee if it will work or not but it may be our best match.
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