Window balancer

Thanks for posting. That stamp is not an identifier; it just tells us the strength of the balance. To know what kind of balance you need, please send pictures of the nylon attachments on both ends of the metal channel. I would also like to see a picture of the underside or 'guts' of the metal channel, specifically the point where the metal spring and pulley system connect. We should be able to narrow this all down from there. Many thanks.

Thanks! That's exactly what I needed. Based on what I see here, you have either our S380-27 or S385-27, 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 S378, S380 and S385 balance shoes.