Window Balance Identification

A home owner from USA says:
Hi,
Hope you guys can help me identifying the window balances I need. I need 3 sets of them for single hung non tilt windows. No manufacturer name on windows at all. Pics are attached.

Overall length 24-13/16.
Width 7\16
Depth 7\16
Markings: 23B (on one set) and 8 23BZ (on the other set)

Thank you,
Michael
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Michael. Can you confirm the thickness of the balance? I think it should be more like 3/8". If so, I recommend our S800-24 channel balance. Look it over and let me know what you think.
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