On the tempered glass it says Libby. There are no other markings.

A contractor from Longmont CO. says:
Vinyl SGD 1 1/2" door thickness, The locking latch is a blade rather then square.
User submitted photos of patio door handles.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for posting. I recommend that you check out our 82-032 handle set and 82-218 mortise lock. Compare these to your hardware and see if you agree.
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