Vinyl window coil balance

A quick learner says:
Can't read any names or numbers.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. The shoe looks like it could possible match our 15-155. Is that correct? See if the measurements are the same. If so, I would also recommend the Series 170 or Series 171 coil spring.
A quick learner says:
Ok thanks.
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