Amerimax window does not stay open.

A home owner from San Mateo, CA says:
I have an Amerimax Craftsman Portrait Series single hung window. The coils on both sides of the window have broken. Looking to find the necessary replacement parts so that I can fix the problem. Attached are photos of the window, coil balance, the pivot shoe and support. Thanks for your help.
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Emily from SWISCO responded:

Hi there!

Take a look at our 15-228 which uses the 1/2" thick Series 160 and 3/8" thick Series 165 coil springs. Measure the width of the coil band to determine the best match. For a new single coil support, see our 15-150S . Look these parts over and let me know if you had any questions. 

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