Replacement Parts

I am looking to purchase a replacement mortise lock and compatible handle set for my sliding glass door.

In my cart currently I have- Multi-Point Mortise Lock with Face Plate, 11"
82-265.
I am confident that is the correct replacement lock, what I am not sure of is a corresponding, compatible white handle. Please respond to the e-mail or reply on this thread with any answers (hopefully) or questions that need more info. The center to center screw hole measurement for the handle is approximately 3-15/16"