Not sure what the part is called

Question

Hi, I have a window where the side "spring" i would say is broken. Not sure what the technical term is but I cant seem to find it anywhere. It is a white cassette like part that is on both the right and left side.

User submitted photos of window hardware.

Paul · Accepted Answer

It's tough to tell what you have based on these pictures. The stickers don't tell us all that much. I believe you might have our S160-5 and S160-4 coil springs. However, I'd like to see your pivot shoe to confirm.