1/2 inch Wide Channel Balances

Question

I need several window balances but cannot quite identify which series that I need. Can you help?

It is a 21" balance and it has a 2020 marking on it. Please let me know if this helps.

Thanks,
Dan G

Customer image of a their channel balance.

Casey · Accepted Answer

Looks like SWISCO balance series 390.
Here is a product code link to get you started, choose stamp option 2020:
S390-21