Coil springs broke on both sides of window

A quick learner from Calvert county Maryland says:
Need 2 pivot shoes and coil springs
I think 15-192 for the shoes not sure about the springs
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Bob from SWISCO responded:

Thanks for writing in. I agree the 15-192 is the correct pivot shoe. This is compatible with our Series 170 Coil Springs. Based on your spring's stamp number you might need our S170-405, which supports 5 lbs of weight individually; but if you're uncertain this is correct, weigh your window sash. Give us that exact weight, and we'll work out precisely what you need. Many thanks.

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