Need balancer for Certainteed double hung

A professional from Norristown says:
Hello, I am looking to get this part for a certainteed double hung window. This was installed by a different company, but we will be servicing the window as part of a new job. Let me know if you have anything similar in stock.
User submitted photos of a window balance.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting. Please see our 15-155 pivot shoe and either our Series 170 or Series 171 coil spring. Let me know what you think.
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