Coil Balances Needed

A quick learner from US says:
March 6, 2020
I have a TRACO double hung window that needs the coil balances on both sides changed. The window is 26#. Thanks.
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Bob from SWISCO responded:
March 9, 2020

Thanks for posting. This looks like our 15-087 Coil Balance Shoe and the 15-086 Housing Tandem. This system uses our Series 180 Coil Springs. 

Do you mean your window weighs 26 lbs? If so, then you'd need one of the S180-6 6 lb Coil Springs and one of the S180-7 7 lb Coil Springs on each side of the window sash. That would give you 13 lbs of support on either side of the sash, for a total of 26 lbs of support. Let me know if you have any other questions.
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Casey from SWISCO responded:
March 9, 2020

You're very welcome! We are happy to have been able to pass on some new knowledge to you. Please think of us again for a future project. 
A quick learner from US says:
March 9, 2020
Thanks for the response!
Yes, the window weighs 26# and I had no idea you could mix different tension coil springs although it makes perfect sense for balance.
Thanks again!
Coil Housing Pivot
Coil Housing Pivot
15-087
$5.97
Tandem Coil Housing
Tandem Coil Housing
15-086
$1.68
6 lbs Series 180 Coil Balance
6 lbs Series 180 Coil Balance
S180-06
$4.45
7 lbs Series 180 Coil Balance
7 lbs Series 180 Coil Balance
S180-07
$4.97
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