Jasmine from SWISCO responded:
February 28, 2024
Thanks for reaching out to us! Your coil balance assembly looks a lot like our Series 140 Quick-Tilt balances. Since yours are stamped with a 4L and 4R, I believe you'll need the S140-4. To confirm that this is the right fit for window, carefully review the dimensions below. Alternate image for S140-4
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