Hello,
We do offer the 82-310 or 82-315 key locks. The locks are identical but the correct replacement would depend on if your original external handle has a built-in protrusion to install the lock or not. See the video below that shows the process of tapping out the circular punch of the external handle to install a keylock below. To confirm if our locks would be compatible we would like to see the face of the mortise lock in the center of your door that the lock spindle would engage with. Thank you!
Thanks for getting back to us. Your mortise lock resembles the 82-265, which would be compatible with our replacement key locks. It also looks like your external handle is flat, so you would need the 82-315 that comes with a housing for the lock body. Take a look and let us know if you need anything else.
