Window Balance needed

A contractor from Branson Missouri says:
No Identifying marks other than US Patent #5,353,548

I have several rentals that have these windows that need the balances replaced. I would like to have a few of these overnighted to me, then have a source to get them from when needed
User submitted a photo of a coil window balance.
Profile picture of Paul
Paul from SWISCO responded:
Looking at this photo, the bottom spring housing with tilt cam is broken and the top spring housing looks damaged where it hooks to mounting bracket. The coil springs look fine. See our 15-087 and 15-086 housing, 16-024 bracket, and Series 180 spring and let me know if these match.
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