Broken coil springs

A home owner from 95051 says:
May 15, 2020
This is a tilt window, single hung, wight 8 lbs. Both sides coil springs are broken. The springs are 1/2 inch width. The balance shoes are 1-3/8 inch width. Please give me the link of replacement springs so that I can replace them. Thank you.

Bests,
Xiaohai
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Bob from SWISCO responded:
May 18, 2020

Thanks for writing in. This looks like an older version of our Series 140 Coil Balance system. If the window sash weighs exactly 8 lbs, then you'd need our S140-4 4 lb system, one for each side of the sash. 
4 lb Series 140 Quick-Tilt, Single
4 lb Series 140 Quick-Tilt, Single
S140-04
$7.31
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