certainteed vinyl /replacement window devon install 27 years ago

A handy person from north haven conn says:
the measurement of the window is 24/37.5 inch the sash weigh 7.5 pounds the number are /a 1 87598
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Paul from SWISCO responded:
Thanks for posting. First, can I ask about your pivot shoe? Look at our 15-192 and let me know if this is a match. If so, I would recommend starting with our S170-407 coil spring.
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