Key lock handle for patio door

A home owner from Cleveland Ohio says:
Looking to replace patio door handle with one that has key lock. Handle holes centers measure 4" but probably 3 15/16. Mortise holes measure 3 5/8. Any help in identifying parts needed to accomplish this would be greatly appreciated. Handle top to bottom is about 6 1/4". Thank you.
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Tom from SWISCO responded:

I believe you can use our 82-086 to replace your old handle set. Just note that the thumb lever is in the lower most position and cannot be adjusted. I think yours is in the lower position, too, but it could also just be a trick of the angle. Just something to consider.

A home owner from Cleveland Ohio says:
Thanks. Not sure what you mean "thumb lever is in the lower most position and cannot be adjusted." Additional photos show lever down is locked position and up is unlocked.
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Tom from SWISCO responded:

Sorry for not clarifying. Basically, patio door handles like yours have three positions for the thumb lever: upper (closer to the top screw), centered, and lower (closer to the bottom screw). Your thumb lever can be adjusted to be in any of these positions so it's not a big deal.

However, the thumb lever is fixed on the 82-086. It can only be in the lower position. Yours appears to be in that position, but you should double check to be sure.

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