I bought this house new, 20 years ago, and haven't done anything with the windows until now. I started this project because one window started creeping up when I closed it. I'd close the window, then the sash would creep back up about an inch or so.
And it's happening again with the new balances.
A Swisco rep asked for pictures and the glass size as we're trying to troubleshoot my issue.
The visible height of glass portion of my window is 32".
Here's a picture of the new and old balancers.
One of the new ones' cords is crossed.
Both windows weigh 20.8 lb
I did discover that they have different balance manufacturers
but in theory should be the same.
Please note that the one that's marked IG5 is a slightly different channel balance. That one actually works best.
All have a 34 inch metal length.