How do I identify what Andersen balances I need?

Thank you for contacting us. There really is not fool-proof way to identify your Andersen sash balance. We think that the best method is to remove the balances from your window and let us know what each stamp printed on the box reads. There is usually a very specific stamp that lets us know which balance acts as the appropriate replacement, but it's often tricky to find. You might find it easier to send us pictures of the stamps.

Please make sure to also see our tutorial video on how to replace your Andersen sash balance.

Thank you for getting back to us. Unfortunately, I'm having a bit of trouble identifying what balance may match that stamp. Could we perhaps see a picture of that stamp? Seeing how it's printed may shed some insight on the matter.

Aha! I see. That clears things up considerably. With the stamp 7P27, I think you should look at our 24-737 Andersen sash balance, which can be used to replace balance boxes with the stamp 727.

As for the other balance, that seems like it would be our 24-837, which can replace balances with 837 printed on the box.

Sure thing! With an old stamp of "9#27," you can use our 24-939 Andersen sash balance as a replacement.

Please feel free to reach out if you had any other questions.