Help ID Coil Balance

Question

Please help me ID these coil balances. The windows are approximately 13-14 years old and are single hung. There appear to be different balances on each side and the metal part is marked with a "4". The window sash falls closed and will not stay open. Thank you for your help!

User submitted photos of a window balance.

Paul · Accepted Answer

Please see our S190-440, I believe this is what you need. I've also related other parts you may be interested in, which you can see on the right side of this page.