window spring + clip

A contractor from princeton nj says:
need to replace the clip and spring

User submitted photos of a window balance.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
This looks like our Series 140 coil balance. Take a look and let me know if you agree. I see that your hardware is stamped "5+4," which makes me think you have a 5 pound and 4 pound spring for each side. If that's the case, check out our S140-9.
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