window balancer

Question

36 inches end to end. stamped with 3530. These are from Lawson windows about 19 yrs old

Tom · Accepted Answer

Thanks for your photos. Based on what I see here, you have either our S380-36 or S385-36, 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.