Replacement Spiral Window Balance for OLD wooden window

A quick learner from Great Neck NY says:
Hello there -

I am fixing up an old double hung wooden window in my garage. I need to replace the the two spiral window balances. the tube is 27" and the bottom has a foot that screws into the bottom of the window.

Thanks!
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Emily from SWISCO responded:

Hello!

This looks like either our 3/8" diameter S400-27 or 5/8" diameter S500-27 spiral balance for non-tilt windows. For a new bracket, see our 17-012

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How to Identify a Replacement Spiral Balance
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How to adjust a spiral balance on a non-tilt window
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