Window Channel Question

Hello,

With this combination of attachments, you could have either an S380-35 or S385-35 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need to choose the spring correct strength option based on the stamp code on your original metal balance channel. 

Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.