Sliding glass door lock replacement

Question

We have a door from the late 1950's that has a broken mortise lock. I can't find a replacement to fit the mortise holes which are about 4 1/8". The holes on the handles are 4 1/4". Do you have a universal fit set that would work in it? Thanks, Chris

Bob · Accepted Answer

This looks a bit like our 82-063, but this is a surface-mount handle set (i.e. didn't use an internal mortise lock). I'm not sure what mortise lock would work here; it may be something no longer made. Without seeing it I can't be certain. Otherwise, I'd consider seeing if you could use a newer style surface mount handle set on this door, like our 82-005. You'd have to drill new holes to install it, but it may be your best option.