Replacement Lock set for a sliding french door

A home owner from Pittsburgh, PA says:
October 22, 2016
I have a sliding french style door and the lock set no longer works. The latch does not move up and out to grab the mounted piece. I attached a picture. The only marking on the lock set is "DNS". The box with DNS on it is 4" long, .5" wide and 1 and 1/8" deep. The tumbler including the bar that goes through the lock set is 3.25" deep. The entire handle is 10" long, 1" wide and there are 3 screw posts. See picture 2. I would like to purchase a new lock set but I would be happy to get a whole new handle and lock set too.
User submitted photos of patio door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
October 26, 2016
I don't believe your handle is still available. However you might just need to replace the mortise lock. One way to check is to try to manually throw the mortise lock with a screwdriver. If so, you could possibly use our 82-218 as a replacement.
Mortise Lock, Round Face, 3-11/16"
Mortise Lock, Round Face, 3-11/16"
82-218
$11.70
Mortise Lock, 4-5/8"
Mortise Lock, 4-5/8"
82-226
$13.97
Key Lock
Key Lock
82-310
$14.30
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