identifying channel balance and shoes.

Thanks for writing in. See our S380-26 or S385-26. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare your old hardware with both balances to see what matches best. Both nylon fittings come attached to the balances out-of-the-box. To know what stamp option to select, please weigh your window sash. You can then match that exact weight with one of the weight ranges listed alongside each stamp option on the product page.