Crank mechanism for what appears to be a Pella window.

A contractor from Minnesota says:
I need a crank mechanism for what appears to be a pella window. Im guessing it is a 39-097 but dimensions where not found on the Swisco page that I could find. Maybe there are no other arm lengths for a pella window. Can you confirm that. see dimensions on the picture. First arm is 4 1/2" second arm is 5"
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Lauren from SWISCO responded:

Hello, thank you for posting,

I agree that your operator resembles the 39-097. Please review the dimensions below to confirm a good fit! 

Dimensions for 39-097
Dimensions for 39-097
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