Jasmine from SWISCO responded:
May 1, 2023
Thanks for reaching out! Your balances look like they could be our Series 140 Coil Balance assembly. The one in this particular photo would be our part S140-8. You'll need to check the other windows to confirm that they need the same balance assemblies and you'll need to look for a stamp that will indicate the spring strengths needed for those coils. Alternate image for S140-8
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