Broken double coil housing - Part #801020, Single hung window, right hand side

A home owner from Springfield, IL says:
Referring to your email (copy enclosed - see email.jpg), this would be part #15-150D.

I need one of these to fix my current problem window, but would like to order extras - 3 right side housings and 2 left hand housings. I have included a picture of the left hand housing in picture 4, showing the part number.

Please let me know if you have any additional questions.
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Tom from SWISCO responded:

Hello! I'm afraid I don't know what your question is. It seems you've already identified which coil spring cover you need. Can you specify exactly what you'd like to know about this product?

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