When I tried to replace my broken mortise lock, it fell into my sliding door. And now I don't know what kind of mortise lock to replace it with. I bought one that has the right length, but doesn't fit into the opening. Please help! Thanks.
Can't figure out which mortise lock to buy for my sliding door

Home Owner from Maryland
Jul 27, 2023 9:22 am
3 user uploaded images
6 Replies

Bob from SWISCO
Jul 27, 2023 3:27 pm


Thanks for posting. Never fear, you purchased the correct mortise lock. It is meant to be a tight fit, and has to be installed carefully at an angle. The video below shows how to do this.

Home Owner from Maryland
Jul 28, 2023 9:36 am
Thank you sooo much. You won't believe how much time I have spent trying to figure this out. Finally, solid assistance and advice.

Bob from SWISCO
Jul 28, 2023 1:47 pm


You're welcome! This is a very common issue with this lock, but I'm glad we were able to help you work it out.
Please feel free to reach out if you needed anything else. We're always here to help.

Home Owner from Maryland
Aug 4, 2023 1:22 pm
I installed the mortise lock based on the video you shared and (ordered from you). Yay! But I realized I am missing one hollow screw and one non-hollow screw, and the key cylinder also has to be replaced. Could you tell me which screws and key cylinder to order?
Thanks.
Thanks.
3 user uploaded images

Bob from SWISCO
Aug 7, 2023 11:28 am


I'm afraid we can't help with the screws but if you take them to a local hardware store, they should be able to match them up for you. As for the key lock, see the 82-310.
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