Identification of Balance

You'll need either the S380-15 or the S385-15 to replace your balances. To determine which of these is the correct replacement, you'll need to confirm the depth (front to back measurement) of the bottom shoe.

The 1450 stamp should work for the window. A pair of these will support a sash weighing 13 to 17lbs.

Comparison of the S378, S380 and S385 balance shoes.