1 of the springs has a 7 and one has a 6

A quick learner says:
August 27, 2018
Would I order a s140 13?
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Casey from SWISCO responded:
August 31, 2018

I see you have a 15-180 Coil Balance Shoe. This is usually used with the Series 190 coil balance. If you had  a #6 and a #7 coil on each side of your window then you'll want to order S190-640 and S190-740 to replace them. If you need to replace the support hardware as well, please see Balance Bushing, 15-182 and Double Support Detent Clip, 15-181
A home owner from Georgia says:
October 26, 2018
which one goes on top - #6 or #7 or does it matter?
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Paul from SWISCO responded:
November 2, 2018

Personally, I would use the S190-740 coil spring for the bottom and the S190-640 coil for the top. 
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Double Support Detent Clip
Double Support Detent Clip
15-181
$6.17
Balance Bushing
Balance Bushing
15-182
$1.80
740 S190 Coil Balance Spring
740 S190 Coil Balance Spring
S190-740
$9.74
640 S190 Coil Balance Spring
640 S190 Coil Balance Spring
S190-640
$9.74
How to remove window pivot shoes
How to remove window pivot shoes
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How to Replace a Triple Coil Balance System
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Removing a Triple Coil Window Balance
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