window channel balance

Thanks for writing in. I am assuming that these balances are from the same window, and that the top nylon fitting shown in your second photo originally had wings, or those 'tabs' on either side of it, like all the other fittings in your photos do. Let me know if that's incorrect. If accurate, you need either our S380-30 or S385-30. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. You will need a stamp option of 2930.