Marvin casement windows 12x31 glass on each side

A quick learner from Saratoga Wyoming says:
Need help identifying casement window crank operator for a small window above the kitchen sink. It's a two pane window one cranking out left one cranking out right with each pain 12 x 31" roughly. The current cranks have Entry Guard stamped on them. Are I'd 4" hole to hole.
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Emily from SWISCO responded:

Hello there!

Start by comparing your dimensions to our 39-035 and 39-036 operators to see if these match up to your original assembly. 

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