I need help to find part

A quick learner from Naples FL says:
This is the sliding door lock I want to buy. Please help. The part number I read on it is NW1720-2
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Bob from SWISCO responded:

See if our 82-002 matches up. I am afraid we don't carry this handle set in white, though we do have a keyed version that comes in a white finish--see our 82-002WK

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