Casement operator replacement

A quick learner from Chicago,Il says:

I'm looking for a replacement for the attached pictures.
The stamped number on the main part appears to be 45179.
Near as I can tell, the shorter arm has 20810A on it, though I'm not sure I'm reading it correctly.

Let me know if more pics would help.


User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Tom. This reminds me of our 39-031 and 39-032. However, I would carefully compare your dimensions to ours to confirm that these are correct.
A quick learner says:
Thanks, Tom.
The dimensions match up, so that seems to be the case. Thanks for your help !
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