Need Coil Replacement for Single Hung Window Balance

A handy person from Castro Valley, CA says:
Hello Swisco,

I have a single hung privacy window in the bathroom where the coils on both sides have snap and needs to be replaced. The window doesn't stay up at the moment.

The plastic balance housings and the metal coil hanging hooks seem fine. I have attached a picture of the different parts. The removable pane of the single hung window weighs in at 11.326 lbs. Which replacement coils do I need to buy to get this window working again.

Many thanks,
User submitted image of their window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Please see our 15-087 balance shoe, Series 180 coil spring, and our 16-024 bracket and 33-072 springs, if you also need these. I think you'll find this hardware matches quite well.
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