Channel balance- which one??

Question

I need replacement parts for my non tilting window! I took the old balances out and they measure 1/2 in x 28 in. There is a tiny 2740 stamped on them, but which series do i need, theres so many choices?? Please help?

Casey · Accepted Answer

Hello,

With this combination of attachments, you could have either an S380-28 or S385-28 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 2740 spring strength options for your replacement balances.

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

Comparison of the S378, S380 and S385 balance shoes.