Replace with a keyed lock?

A quick learner from MN says:
June 6, 2021
I'm looking to replace this with a keyed lock if at all possible.
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Casey from SWISCO responded:
June 10, 2021

Hello,

Take a look and compare our 82-030 handle set to yours, which is compatible with the 82-310 key lock that is sold separately. Thank you!
Mortise Lock, Round Face, 3-11/16"
Mortise Lock, Round Face, 3-11/16"
82-218
$11.70
Sliding Patio Door Handle Set, 3-15/16"
Sliding Patio Door Handle Set, 3-15/16"
82-030
$29.95
Key Lock
Key Lock
82-310
$14.30
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