constant force double hang window coil springs replacement

A quick learner from New York Jamaica says:
August 6, 2023

Hi, my double hang window spring coils of constant force window balance broken and can not stay opening, I make a list of order to make a replacement, is this list are suitable set that I need? Is there need to order left size and right side different parts? Thank you

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Bob from SWISCO responded:
August 6, 2023

Thanks for posting. Good work, I think you're correct on all counts. Your pivot shoe is an older version of the 15-228, and based on the stamps, you need S160-6 6.5 lb coil springs, which can fit with the 15-150D Coil Support. These parts are indeed nonhanded, meaning they can work on either side of the window. Let me know if you have any other questions.
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-228
$2.57
1/2" Coil Double Support
1/2" Coil Double Support
15-150D
$1.57
6.5 lbs Series 160 Coil Balance
6.5 lbs Series 160 Coil Balance
S160-06
$4.85
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