Need help finding a replacement

Hello,

We'd be happy to help but, unfortunately, your stamp code is from an outdated weight system that is no longer used. For that reason, you would need to determine the exact weight of the sash to follow the chart under our balance product description, which shows the corresponding strength option for each weight range. 

If you need help determining the correct series to replace your balances as well, we would need to see the fittings attached to both ends of the metal channel to compare to our inventory. If these balances are too damaged, I would recommend checking another window in the house that uses the same balances that may be in better shape. In the meantime, take a look at the specifications of our 16-002 take-out clips to confirm if they would work in your windows. Thank you! 

Alternate image for 16-002

Thanks for getting back to us. I can't confirm if the S350-28 would be the correct replacement without seeing the end fittings of your balance but if you're confident that the specifications match yours, you would need 2740 strength options to support a window sash between 19-26 lbs. You can also find the chart under the S350-28 product descriptions that includes a chart showing the weight ranges supported by each option.