Window balance assistance

Our Series 370 channel balance seems to be a winner. This comes assembled with a 19-004 balance top and 15-002 bottom balance shoe. That said, you will need the S370-17, S370-29, and S370-25. Your balances should have some sort of stamping or marking. That will determine which option is best appropriate. If there are no stampings, weigh your sash on a scale and refer to the sash weight chart listed on the store page.