Need replacement casement operator

Thanks for posting. Your operator looks a lot like out 39-438B. The opposite version of this operator is part 39-439B. Take a look a the dimensions and compare it to your original hardware to confirm that this is the correct replacement.

Dimensions for 39-438B

The compatible cover and handle kits for the 39-438B are the folding handle kit part 39-375 and the cover kit with a standard handle, part 39-451. They will both work with the operator, you'll just need to determine the type of handle you'd like for your window.