Need a new key lock for my Anderson sliding door

A quick learner from NY says:
Hi! When I bought my house, I never got the key to this exterior Anderson sliding door lock.

Now, the lock latch doesn't even hold the door locked. It appears locked, but the door easily slides opened. So at a minimum, I'll need to replace the latch, but I wouldn't mind replacing the deadlock assembly and receiving latch too. If I can't find a latch that matches the ugly brown handle on the door, I'll also replace the handle if Swisco carriers it. But I first need help figuring out which model Anderson door I have and which parts I need. Please help!! Thank you.
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Tom from SWISCO responded:

Hi there, thanks for reaching out to us. We can definitely supply this hardware for you. Or at least, we can supply the modern versions. Your exact parts are a little older and not made anymore, but ours should be fine.

Start out by looking at our 82-316 key lock and 82-043 thumb lever. This key lock is Left Handed, determined from the outside looking in and in reference to the operating panel. I believe that's what side your door is on but please correct me if I'm wrong.

We also carry the newer 82-037 mortise and the 88-013 interior and 88-014 exterior pull handles.

Please let me know if you have any other questions!

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