sliding door lock

A handy person from Scio, NY says:
Have pics of existing door handle with 4 15/16ths screw holes with fixed anti-lift arm and rotating latch key but I don't have key cylinder and want a lockable handle. Existing interior handle has slot for key cylinder arm and other than handle itself the locking hardware portion is the same as 82-005. My exterior pull appears to be identical to 82-402 with what looks to be a knock-out for key cylinder. Do I need just the key lock cylinder 82-310 or will I need the exterior pull 82-302 also? Existing wood sliding door is 1/2" thick. Also need 89-012 side mount keeper, since existing keeper is a mortised unit in previous door frame. Wooden sliding door now butts up to an aluminum frame doggy door 3/4" thick but both interior sides are flush to one another.
Thanks in advance for your advice! Rich
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:
If the handles are okay, and you want to add a key lock, you can consider our 82-310 or the 82-306. Your existing outside pull seems to match our 82-306 closely, and the 82-306 uses our 82-310. At the end of the day, it would come down to whichever is easier for you.
A professional from CA says:
82-302 is definitely not an option. If it's worth $10 to avoid the hassle of punching or drilling out your existing handle buy the 82-306. I'd say if it looks at all difficult to you, the pre-made one is better.
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