Need to replace the coil spring

A quick learner from Milwaukee, WI says:
September 19, 2022
Hi there,

My window has a broken coil spring and I plan to replace it. My window sash weighs about 7.11 lbs. Would you help me identify the parts I should purchase, please?

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Emily from SWISCO responded:
September 21, 2022

Hello!

Certainly. I recommend our 15-087 that's designed to be used with the Series 180 coil springs. You can use (1) S180-4 4 pound coil spring on each side of the window which totals 8 pounds of overall support. This weight setup should be fine as long as the weights are within a pound of your sash's actual weight. 
A quick learner from Milwaukee, WI says:
September 21, 2022
Thank you so much Emily! That was extremely helpful info!
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Emily from SWISCO responded:
September 22, 2022

No problem at all! I'm happy to help. If you need anything else just let me know! 
Coil Housing Pivot
Coil Housing Pivot
15-087
$5.97
4 lbs Series 180 Coil Balance
4 lbs Series 180 Coil Balance
S180-04
$4.20
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