Pivot shoes for double hung windows

A quick learner from Hawaii says:
The Springs have broke on my double hung windows and I'm not sure of the part number, but I've attached a photo...I hope you can help!!

Thanks,
Thumbnail of the uploaded file named WIndow Springs (1).jpg
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Emily from SWISCO responded:

Hey there!

We sure can. Your pivot shoe looks like a good match for our 15-228 but you'll want to remove yours from the window and compare the dimensions to confirm this matches up to your old part. This shoe is also compatible with the 1/2" thick Series 160 and 3/8" thick Series 165 coil springs so you'll need to measure your old coils to determine which one will be best for your window.

Dimensions for 15-228
Dimensions for 15-228
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