Milgard

Thanks for posting. I am afraid we need more information to assist you. We specifically need to see the nylon attachments on both ends of the balance; the kind your balance uses determine its identity. From there we should be able to narrow this down for you. 

These photos are perfect, thank you. Based on what I see here, you have either our S380-18 or S385-18, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S380 and S385 balance shoes.