anderson window balance
I am also interested in replacing the insulation strip at the bottom of the window. This appears to me to be a bulb type.
Hi there!
I'm afraid the only way to identify what kind of Andersen balance you need is to remove the original and use its markings as a reference. There's no etching or number anywhere else on the window that will tell you what you need. There are a lot of different numbers on the balance itself, too. If you aren't sure which one to go by, show me pictures of the stamps on your old balance and we can go from there.
I'm not sure if your windows have insulation, but we'll need you to remove a piece of weatherstripping and show us a clear picture of the end profile to compare to our inventory. The video below will go over exactly what we'll need.