Balance Pivot - Window manutacture unknown.




Thanks for posting! Your coil housings can be replaced with the 15-087 Coil Housing Pivot and the 15-086 Tandem Coil Housing. I am confident these are the right replacements for your repairs but be sure to look over the dimensions below for the housing pivot. For instructions on how to install these, take a look at the video tutorial tagged below.
These housings are compatible with the Series 180 Coil Balance. Since they are marked with a 7 and 10, you'll need the S180-10 and the S180-07.

The pivot bar typically used with the the housing pivot is the 26-040. Be sure to look over the dimensions.





I'm happy to help! Please do not hesitate to reach out if you get stuck during the process.
Have a great weekend!