replacement coil spring system

A handy person from Statesville, North Carolina says:
These windows were installed 15 to 20 years ago and I do not know what type or brand of replacement they are.
I have added photos of both the left and the right balancers and a photo of the sticker that's on the window sash itself. I hope that helps.
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Casey from SWISCO responded:

Hello,

We should be able to help but we'll need to see you pivot shoe and coil removed from the window to research your replacement options. The width and thickness of your pivot shoe will also help us narrow down your options. I'll also attach a video below to help you with the removal process. Thank you!

A handy person from Statesville, North Carolina says:
On the end of the spring near the two holes is a large number six followed by a small 18 w. On the other spring is a large number six followed by a small 28 w.
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Casey from SWISCO responded:

Perfect, thank you! Your coil balance system looks like it consists of our 16-024 mounting bracket, along with a 15-088 carrier assembly, 15-086 nylon coil spring housing, and S180-6 coil spring. Look these parts over and let me know if you agree.

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