Casement operator

Thank you for reaching out to us. The patent number you provided doesn't help us identify your hardware, I'm afraid. Our 39-035 and 39-036 operators are commonly associated with that number but it's not a guarantee. I recommend you look over the specifications for these parts and compare them with your old assembly to see how they align. 

If they differ in any way, we'll need to see photos of your operator. 

Thanks for the photos. I recommend our 39-216 and 39-217 operators. These parts use the 39-107 cover and 39-114L handle which are sold separately. Look over the specifications and see what you think.