1/2 " channel balance, 23 " long

Thanks for posting. I believe you have either our S385-23 or S380-23. The only difference between these two balances is the heel-to-toe measurement of the bottom shoe, so you will need to measure yours to confirm. We have more detailed dimensions on each balance's respective page that you can use as reference.

As for the option, I think our 2250 is what you want, but you can always weigh your sash to confirm.