Crank swing operator replacement?

A home owner from OH says:
We've neglected this bathroom window as we don't open window about a half of the year due to the sever weather here. Now it doesn't open easily, all rusted and I am thinking we should replace this? I rublicated to help the move but it is hard to turn. Please help.
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Tom from SWISCO responded:

It definitely sounds like it's time for a new operator. Yours appears to be a good match for our 39-239B , though you should review the dimensions and pictures we show on its store page to confirm. If you needed a new handle and cover, too, then see our 39-451 .

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