Thumb latch

Question

I need the thumb latchforthe slinding door. The door lock appears to be working well and I am pretty sure it is a Mortise Lock Round face, Product code: 82-063

But I don'tknow which one is the correct latch replacement for it.

Paul · Accepted Answer

This looks like it could be an Andersen brand door. With that in mind, I would recommend the 82-043 thumb lever. See what you think.