Casey from SWISCO responded:
December 7, 2020
Hello, Take a look at our S500-23 spiral balance. If your original balance has a 23" long tube and worked well when they were originally installed, I would recommend replacing it with the same length. The white tip on your balance is also outdated, so you'll need to weigh your window sash and choose the correct strength option following the chart below. Thank you! Color Tip Sash Weight Range Red 7 to 29 lbs Blue 12 to 31 lbs |