Need Window Parts

A handy person from warner robins, GA 31088 says:
October 6, 2017
The only part number I can find is on the coil #540. The window weighs 19 lbs. Instead of buying 4 #540 coils for ea. window would 2 S140-19 work for ea. window and 2 pivot bars?
Coil assembly
A handy person from warner robins, GA 31088 says:
October 6, 2017
I asked if 2 S140-19 would work instead of the old parts but noticed that balance carries 19 lbs ea. so I guess that would be 2 S140-10.
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Tom from SWISCO responded:
October 12, 2017
Thank you for choosing SWISCO.com. I would not recommend using our Series 140 coil balance for your window. Your shoe looks like an older version of our 15-180. With that in mind, I would recommend the following parts: the 15-180 shoe; 15-181 detent clip; 15-182 bushing; and S190-540 spring. Each of these springs can carry 5 pounds, and since you have two springs per side that's a total of 20 pounds of support. It should work fine for your window. For the pivot bar, please see our 26-040. Let us know how you make out.
Pivot Bar, 3"
Pivot Bar, 3"
26-040
$1.57
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
540 S190 Coil Balance Spring
540 S190 Coil Balance Spring
S190-540
$9.74
10 lb Series 140 Quick-Tilt, Single
10 lb Series 140 Quick-Tilt, Single
S140-10
$9.85
19 lb Series 140 Quick-Tilt, Dual
19 lb Series 140 Quick-Tilt, Dual
S140-19
$14.20
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