Looking for key locks for vinyl sliders

A contractor from Crisfield, Maryland says:
October 10, 2016
There are no markings on any of the sliding doors except for a date code in the glass of AUG 11 2004. I am looking to get keyed locks for (3) of these.

Can you help me identify these?

Adam - Wellington Services
User submitted photos of patio door hardware.
A contractor from Crisfield, Maryland says:
October 10, 2016
Just found a label on one door, WASCO Rolling Patio Door
Profile picture of Paul
Paul from SWISCO responded:
October 13, 2016
Sure, we can definitely help. See our 82-310, I believe this can work in your door.
Key Lock
Key Lock
82-310
$14.30
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