need replacement coil balance hardware for Milgard double hung window

A home owner from San Ramon, California says:
April 6, 2024
Hi, I would like to buy replacement coil balance hardware for a Milgard double hung window. The coils for the upper sash broke as shown in the attached photos. I figure I might as well replace the coils for the lower sash while I'm at it because they probably aren't far behind. The coils for the upper sash are single coils, while the coils for the lower sash are double coils. I attached three pictures of the upper sash coil and two pictures of the lower sash coil.
Thumbnail of the uploaded file named 4.5 stamped coil
Thumbnail of the uploaded file named coil balance assembly
Thumbnail of the uploaded file named upper sash coil balance assembly
Thumbnail of the uploaded file named pivot shoe coil spring
Thumbnail of the uploaded file named upper sash coil springs
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Emily from SWISCO responded:
April 9, 2024

Hello there!

Thank you for reaching out to us. Our 15-111 appears to be a match. The Series 160 are the compatible coil springs and it looks like yours have stamps that indicate the spring weight. 

For the spring stamped with #9.0, see the S160-9.

For the spring stamped with #4.5, see the S160-4.

For the spring stamped with #5.5 S160-5.

You can reuse the old spring supports if they're in good shape. 
A home owner from San Ramon, California says:
April 27, 2024
This was incredibly helpful. I can't thank you enough!

Dave
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Emily from SWISCO responded:
April 29, 2024

I'm happy I could help, Dave. Good luck with the repair; I'll be here if you need anything else!
Heavy Duty Pivot Shoe, 1/2" Thick
Heavy Duty Pivot Shoe, 1/2" Thick
15-191
$2.57
9 lbs Series 160 Coil Balance
9 lbs Series 160 Coil Balance
S160-09
$5.48
5.5 lbs Series 160 Coil Balance
5.5 lbs Series 160 Coil Balance
S160-05
$4.63
4.5 lbs Series 160 Coil Balance
4.5 lbs Series 160 Coil Balance
S160-04
$4.50
1/2" Coil Single Support
1/2" Coil Single Support
15-150S
$1.10
1/2" Coil Double Support
1/2" Coil Double Support
15-150D
$1.57
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