Casey from SWISCO responded:
February 21, 2024
Hello, The balance assembly shown in your photos resembles the S800-29 but this balance comes with a smaller 3/8" wide metal channel. I believe that this is what you need but it's important to confirm that the channel width is the same. How to measure the length of the Series 800 channel balance.
The 28-A stamp on your balance would generally mean that you need 28A strength options for your balances but they would only support a sash weighing between 4-8 lbs. If you have an 11-pound sash, you would need 28B options to support a sash between 8-14 lbs. Take a look and let us know if you need anything else. |