sears double hung window coil balance spring

A handy person from west barnstable, Ma says:
May 31, 2022
Small double hung Sears vinyl window has 2 broken coil balance springs. The springs are 1/2" wide and about 35' long unwound. Pictures attached. What is the correct replacement?
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Emily from SWISCO responded:
June 3, 2022

Hi there!

This appears to be a match for our S140-5. Compare our dimensions with yours and see if you agree. 
5 lb Series 140 Quick-Tilt, Single
5 lb Series 140 Quick-Tilt, Single
S140-05
$7.49
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
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