Need to replace window balance. Trying to identify the correct replacement.

-Brand of window was "Best Built"
-Metal portion of the balance is 31" long
-Tag on the window says it is a 820 Series / May differ from the balancer series
-One of the plastic pulleys inside the balancer is broken
-Not sure if the plastic end pieces are complete / may be broken



Thanks for your post! The information provided was very helpful in narrowing down your balance replacements but I'll need to see just one more detail before moving forward. May I see photo of the bracket installed in the center of the balance? This is where the spring and the string meet in the middle.
Please don't hesitate to reach out with any questions!




Hi Dave,
Your balances can be replaced with the S395-31 Channel Balance, which is assembled with a winged top guide and a wingless bottom shoe. It appears your balance may have a 30 3 stamp, which can be replaced with the 3030 stamp option, but be sure to double check this; its a bit difficult to make out the exact stamp from the photo.




I'm happy to help! Please don't hesitate to reach out with any other questions you might have.