Constant force balance

A home owner from Arkansas says:
I need to replace the part pictured. It's a Caldwell constant force balance. I think it's a friction lock. The window is 58x47.
Do you have a part that will work?

User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Check out our Series 140 coil balance, I think this may be a good match.
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
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Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
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