Guardian glass door replacement

Thanks for posting. I'm afraid it's nearly impossible for me to say what mortise lock you need without seeing a picture of the original. Show us a picture of your old mortise lock, and we'll see what we can recommend. 

I'm not laughing at all--that's actually a very helpful clue! This happens all the time to people trying to remove or replace our 82-218 Mortise Lock. Because of it's design it's particularly at risk to falling into the door during installation. Plus, I see you were looking at our 82-035 Handle Set; this would certainly be compatible with the 82-218, so I suspect this is what you had. Just take a look and see what you think. Also see the video below for removal and replacement details; keeping a set of pliers on the hook of the mortise is a good way to ensure it doesn't fall during installation.

We get this question a lot. I'm almost positive that the 82-218 is what you want. They're designed to have a tight fit. You just have to put it in at a sort of angle, just like how we show in the video.

There is no better match for your door. They never made this mortise with such subtle differences in length.

That's great news! I'm happy to help, of course. if you ever need anything else, please don't hesitate to ask.