Hi,
I need to replace window balance for a vinyl window that has hung. It's a block and tackle style 33" long. It has a Caldwell 24 4 LP stamp on it. It appears to be a 1/2" width. best I can guess it's a 380 series balance but I'm not sure. Both the top and bottom guides have wings on them. Please see the attached photos.
If you have questions or need to contact me you can do so
Thank you for your help,
Bill