Certai teed parts

A contractor from Overland park says:
These are Certainteed vinyl double hung windows I was hoping you could confirm a part number for the photos I've attached.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. The pivot shoe resembles our 15-155, while the coil could be our Series 170 spring. Let me know if you agree!
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