Vinyl window spring

A handy person from San Diego says:
May 20, 2021
I have what I think is a Value Brand white vinyl window that was broken out. The coils help the window slide. I would appreciate any help finding a replacement. Thanks for the help.
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Bob from SWISCO responded:
May 24, 2021

This reminds me of our 15-102 Double Side Load Carrier. This carrier uses our Series 145 Coil Balances. If you're uncertain what spring weights to select, give me the exact weight of the window sash that these balances support, and I can work it out for you. 
Double Side Load Carrier
Double Side Load Carrier
15-102
$2.65
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