Keyed lock for sliding glass door.

A home owner from Pinehurst says:
I'd like to be able to use a key to lock/unlock my sliding glass door.

The following was on the glass:
CTG Tempered
160FR 1201II
SGCC 1804 1/8U
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:
Perhaps I can help you with this. You can just knock out the plug on the outside handle and install our 82-310 key lock. Hopefully, that will help you. Get back to us and let us know how you made out.
A home owner from Pinehurst, NC says:
Thank you for your help. That worked. I had to leave the handles a little loose. The lock would not turn when I had the handles tight.
A professional from CA says:
Try trimming a little off the length of one or both of the tails. If they rub in the middle they will bind. They should be close to the center without touching each other.
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