Balance springs for single hung window
.5" x 34"
Balance spring
Quick Learner from San Diego CA
Oct 21, 2020 4:18 pm
5 user uploaded images
4 Replies
Casey from SWISCO
Oct 23, 2020 2:48 pm
Hello,
With this combination of attachments, you could have either an S380-34 or S385-34 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 locate the stamp on the metal channel to choose the corresponding spring strength option for your balances.
Thank you and let us know if you have any other questions or concerns.
Comparison of the S378, S380 and S385 balance shoes.
Quick Learner from San Diego CA
Oct 29, 2020 12:41 pm
It looks to be 1 -3/32 wide and the stamp reads 33 3 BSI.
I need 7 sets of the balance springs and 14 sets of clips.
I need 7 sets of the balance springs and 14 sets of clips.
2 user uploaded images
Casey from SWISCO
Oct 29, 2020 3:58 pm
That would be our S385-24 with a 3330 spring strength option. I'm not sure what clips you're looking for though? Could you show us?
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