Window won't stay open

Thanks for reaching out! I am confident we can make a replacement recommendation for the coil balance assembly you need. However, to narrow down the best replacement match, I'll need to see the assembly removed from the window. Unfortunately, I am not able to identify it from the photos provided, especially since the view of the assembly is obstructed by the sash. You'll also need to have it removed to compare the measurements.

Please don't hesitate to reach out with any questions.