hook latch for sliding glass door.

A home owner from 06010 says:
July 29, 2020
hi, I am having a hard time finding a new hook replacement for my sliding glass door. The door no longer locks. The hook does not catch. All the replacements I have found have thicker hooks and won't go into the hole on the door frame. As you can see the hook I have is very thin. These doors are over 20 years old. Can you advise?
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Tom from SWISCO responded:
August 3, 2020

We have several mortise locks that look similar to yours, chief among them being our 82-218 and 82-243, but the hook size on each of these is standard. To my knowledge, the manufacturer does not vary that particular detail in any mortise locks that I know of. Looking at your photo, it doesn't look particularly thinner than anything I've ever dealt with.

I can only say that your keeper also resembles our 89-017, and that our 82-218 and 82-243 are both fully compatible with this keeper.
Mortise Lock, Round Face, 3-11/16"
Mortise Lock, Round Face, 3-11/16"
82-218
$11.70
Stainless Steel Mortise Lock, Round Face
Stainless Steel Mortise Lock, Round Face
82-243
$21.32
Adams Rite Latch Plate
Adams Rite Latch Plate
89-017
$5.97
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