help replacing balance

A home owner from USA says:
The house was built in 1963. The windows are non-tilt, double hung wooden windows 30
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! When it comes to old balances like this, we usually recommend our Series 500 spiral balance, along with a bracket like our 17-012. We believe these will work in your old wood window.
How to adjust a spiral balance on a non-tilt window
How to adjust a spiral balance on a non-tilt window
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