I have 26" window balances. One of the balances has what looks like a part number. 25 4 FU CMC 4. The steel measures 26" from end to end not including the plastic. I hope this helps and your able to identify the balances.
Thank you,
Paul
Window Balance

Home Owner from Hayward, CA
Sep 13, 2021 12:40 pm
3 user uploaded images
2 Replies

Emily from SWISCO
Sep 17, 2021 3:39 pm


Hi, Paul.
Thank you for your patience during our busy season. Your top fitting looks like it might have wings, just like the bottom fitting. Is that right? If so, you could have either an S380-26 or S385-26 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 a spring strength option of 2540.
If you think these Series are incorrect, we'll need to see a clearer picture of your top fitting.

Comparison of the S378, S380 and S385 balance shoes.
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