need help
Hello! I am very sorry for the long wait; we appreciate your patience during an incredibly busy season.
We're happy to help with this, but I will need you to remove the sash and show us a clear shot of the pivot shoe. Once we ID that, we can determine the compatible coil balances.
In the meantime, you can find our return policy here.
Thank you for the additional photos!
This looks like the 15-228 pivot shoe, which uses the 1/2" S160 coil springs. Since the coil housing is stamped with the number 9, see the S160-09 9-pound spring. For the spring housing, see the 15-150S. Review the specifications for these parts along with the video below and see what you think.