Replacement balances

Hello there!

Thank you for reaching out to us. Your balance looks like a match for the S380-30 or S385-30. The difference between the two Series is the depth of the bottom shoe, as shown below. You will also have to weigh the window sash on a scale to determine the proper stamp option. There's a chart under the product description on the S380-30 and S385-30 store pages that will tell you what option is best based on the weight of the window sash. 

Comparison of the S378, S380 and S385 balance shoes.