coil balances

A contractor from Monroe nj says:
i have one window with this coil in the photo with the number 7 stamped on it and it is 1/2" wide

i all so have 3 windows with the number 832 stamped on it. it is also 1/2" wide
looks the same
Thumbnail of the uploaded file named 20200710_164926.jpg
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Tom from SWISCO responded:

Your old shoe looks like our 15-180, which is designed to work with the Series 190 coil spring. Since your first spring is stamped with "7," I would go with the 7 pound S190-740. For the second spring, I recommend the 8 pound S190-840.

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