Certainteed double hung window spring coils

A quick learner from Hawaii says:
These Certainteed windows are about 13 years old and the metal coils have been broken for a few years. Just getting around to replacing them.

I need 9 rigtht and 9 left. On the coil cover there is a number H65 34/5M.

What parts do I need?

Thanks for your help.
User submitted photos of a coil window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thank you for posting. That shoe looks a lot like our 15-192. Do you agree? If so, I think you should consider either our Series 170 or Series 171 coil springs. Carefully compare them to your own springs and see if either is a good match.
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