Old window need spiral balance spring

A home owner from USA says:
Looking for old spiral balance spring.
User submitted a photo of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hello! This is an older non tilt window spiral balance. We should be able to replace it with one of our newer models. Specifically, I recommend our S500-27. I would also recommend a bracket like our 17-012 to attach it to the bottom of the sash. See what you think.
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