Vinyl sliding windows coil balance

A handy person from Los Angeles CA says:
November 3, 2021
Not sure what they're called. They're 3 coil like rollers inside a plastic slider
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Lauren from SWISCO responded:
November 8, 2021

Hello, thank you for posting! 

Your current setup resembles our 15-103 and Series 145 Coils. Please refer to the stamped number on each individual coil to choose the correct strength options. Please let me know if you have any questions. 
Quad Side Load Carrier
Quad Side Load Carrier
15-103
$2.70
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