Sliding door back panel on lock

A home owner from Illinois says:
Sliding door lock is missing back panel
Thumbnail of the uploaded file named IMG_5463.jpeg
Profile picture of Casey
Casey from SWISCO responded:

Hello,

We'd be happy to help but it's tough to determine what you need without seeing the original part. It would help to see a photo of the mortise lock face plate, as well as the inside portion of the lock that engages with the mortise. Also do you happen to know the manufacturer of the door? Your photo reminds me of Andersen at first glance but we want to be sure before making any recommendations. Thank you. 

VIDEO
WATCH >
How to maintain a sliding glass door
How to maintain a sliding glass door
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.