Thanks, the bottom shoe on my balance looks a little different, but the dimension is 1 1/8". Thanks. I'll go online to order.
No, 21 B is the stamp you want to pay attention to. Usually, that corresponds with our 2120 option, but you should weigh the sash on a scale just to be sure. We have a chart under each balance that lists every option available, as well as how much weight each option can support.