Need help with identifying right balance

Question

Hi,

I need to replace the balances in my window. I believe it is Caldwell. It is 30 in long. The stamp says is 29-4. I'm not sure about the guides though. Can you help me identify the right part?

Tom · Accepted Answer

Thanks for your photos. Based on what I see here, you have either our S380-30 or S385-30, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S378, S380 and S385 balance shoes.