Dual Mortise lock for vinyl patio door, purchased at Lowes

A home owner from New Jersey says:
July 25, 2017
No markings on lock except "Pat Pending". Door is 5 years old, probably Reliabilt, which I'm told by Jeld-Wen could be theirs or Atrium or someone else's, since Reliabilt is a Lowes generic product name.

Length between mounting hole centers is 9-7/8, thickness is 9/16. I'm concerned about the actuator, which is not centered but is 5-1/2" from one side, 4" from the other side. Note that the back side is shorter (9-1/2") than the front side (9-7/8) because the top and bottom surfaces are angled.

Trim plate (no photo) is white, with no hole for anti-slam button, but I can drill one if needed.

I
User submitted photos of patio door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
July 31, 2017
Thanks for contacting SWISCO.com. Please take a look at the 82-239 mortise latch and see if it matches up to your latch. This might be the same one as yours. It has a removable face plate. Let us know what you think.
A quick learner from Beaver says:
May 22, 2020
I have the same latch that is in the picture above. I am wondering if the 82-239 worked for him.
Multi-Point Mortise Lock and Keeper, 9-7/8"
Multi-Point Mortise Lock and Keeper, 9-7/8"
82-239
$41.70
How to adjust a sliding glass door
How to adjust a sliding glass door
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.