Atrium (?) Sliding Door Lock and Handle Replacement Parts?

A quick learner from Nashville, TN says:
May 15, 2017
A tenant removed the original lock and handle from this sliding glass door and tossed the parts. I have no idea how to go about identifying the right replacements for this door. Though based on the manufacturer's code this is an Atrium door? Do you happen to have any idea how I might find the answer to this mystery?
User submitted a photo of patio door hardware.
Profile picture of Tom
Tom from SWISCO responded:
May 19, 2017
Could you need our 82-400? This is for Atrium doors. Carefully compare the dimensions we display to the hole spacing in your door to see if this can work.
Brass Atrium Door Lever Lockset
Brass Atrium Door Lever Lockset
82-400
$101.70
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