S190 3lb springs?

A quick learner from North Carilina says:
May 30, 2022
Hi,
Last year I purchased some replacement coil balance shoes, specifically your Product Code: 15-180 (https://www.swisco.com/Coil-Balance-Pivot-Shoe/pd/Tilt-Window-Replacement-Pivot-Lock-Shoes/15-180) which fit perfectly in my window.

I had a few windows to fix, and so I cobbled together the springs I could salvage to have 2 windows working, and just kept the broken windows closed all winter. Now it is warming up and I'd like to replace the broken springs, but I can't seem to find them on your site. I believe the S190 series is correct, they look the same and fit the same balance shoe but I can't find the weights I had. As you can see in the picture, each show had a 3lb and a 5lb spring, but I can only find the 5lb springs on your site. Can I just use two 4lb springs as a replacement?

Thanks and have a great day!
Adam
Thumbnail of the uploaded file named numbers.PNG
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Emily from SWISCO responded:
June 2, 2022

Hi, Adam.

Yes! Assuming your sash weighs 16 pounds, using (2) S190-440 4 pound springs on both sides of the window will be fine so long as the spring weights are within a pound of your sash's actual weight.
A quick learner from North Carilina says:
June 3, 2022
Excellent! Thank you!
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
440 S190 Coil Balance Spring
440 S190 Coil Balance Spring
S190-440
$9.74
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