Patio door handle brand of handle is Dorwal

A home owner from Amherst ohio says:
Need to find a replacement part the holes are 3.5" apart
The old handle was a Dorwal
On the back of the metal handle there is a "120"
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Casey from SWISCO responded:

Hello, thank you for writing in. See our 82-055, and the keyed version, 82-055K. Review their dimensions and specifications to see if either of these could be a match for you. 

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