identify channel balance

Quick Learner from USA
I am looking for this balance and I am not having luck so far. It is 34" long, 1/2" thick, and 1/2" depth. The part number on the balance us 33A. I have attached photos below as well.
Please let me know if you are able to help me out with this.

Thank you!
4 user uploaded images
2 Replies
Emily
Emily from SWISCO
SWISCO
Expert

Hi there!

This looks like our S770-34 channel balance. We also recommend weighing your sash to choose the appropriate spring strength option. There's a chart on the S770-34's page that will show you which option you'll need based on the weight of your sash. 

If you have any further questions just let us know. 

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