Only serial number I can find on window is: AP-C40 60x66. Or is might say AR-C40 60x66
Either way I googled both and can't find either.
Brian
Tom from SWISCO responded:
March 31, 2020
Hey, Brian. It looks like you have a match for our 39-239B Encore awning operator. You'll also need the 39-451 cover and folding handle. I am confident that these parts will repair your window.