American Craftmans 5502-X

A handy person from Babylon, NY says:
I need to put a keyed lock on this door, i took the outside handle off and there are no knock outs

What do you suggest?

Picture of outside handle attached
User submitted a photo of a patio door handle.
Profile picture of Paul
Paul from SWISCO responded:
Hello, thank you for posting. I don't believe you'll be able to get a key cylinder to work for this handle. You may need a new handle set entirely. I recommend using our 82-069 handle set with an 82-310 key lock. See the video below on how to install key tumbler. The hardware in the video is slightly different than what I've recommended, but I think you'll still find it helpful.
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