Confirming if I have S380-29

I'm afraid I cannot confirm whether the Series 380 channel balance is a match. I can't make out the finer details of your nylon attachments. It looks like your top attachment doesn't have wings, which discounts the 19-005. It could be our 19-002 instead. I cannot see the shoe at all so I'm not sure if the 15-005 is a match.

As for the stamp, I don't think it corresponds to our 2840. Can you weigh your sash on a scale and tell me what you get? That will allow us to recommend the proper stamp option.

Thank you! From these additional photos, your bottom balance shoe looks like it could be our 15-001 (1-1/8" depth), which indicates our Series 390 channel balance as a replacement. See if your shoe size is the same. I will wait for your window sash weight.

Thanks, but I think you might be a little crossed up. We do not need the weight of the balance, but rather the window sash. This is the glass panel that you raise and lower. The job of your balances is to support the sash, which is why knowing how much it weighs is important while determining how strong your balances ought to be. Let me know once you can get that for us.