balance replacement

A home owner from Tn says:
I'm trying to find out which balance I need to purchase. The only numbers I can find on the balance are 33 3, shown in the picture. Which balance do I need to buy for this replacement?
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for contacting us. Take a look at our S390-34 channel balance. I think this could be a good match. Just make sure the nylon attachments that come with it are the same size as yours.
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