Window part, not a vinyl window. Don't know mfr of window.

Question

This is the 2nd window that has a problem with this part. The window is not vinyl.

Jasmine · Accepted Answer

The part you have pictured here is the coil balance shoe. It can be replaced with the 15-180. There doesn't appear to be any damaged to it based on appearance so it could be very likely that you'll need to replace the coil springs attached to the shoe.

Alternate image for 15-180

This shoe is compatible with the Series 190 Coil Balance Spring. To determine which one you need for your assembly, you'll need to check for any stamps/markings on the coils. If there aren't any, you'll need to obtain the exact weight of your sash and divide that by the total number of coils in the window.

I've tagged a few of the other compatible hardware and accessories below for your review.