Hi, Im trying to fix my window that won't stay open and discovered the springs on both sides have snapped. The window weighs 12.8 lbs, and the only marking I see is "6AF" on the spring. What part do I need to replace it with?
Thanks
Broken window balance spring identification

Handy Person from Missouri
Apr 26, 2024 8:31 pm
1 user uploaded image
4 Replies

Emily from SWISCO
Apr 29, 2024 11:06 am


Hey there! We should be able to help with this. However, identifying the pivot shoe is the first step. Can you show us a photo of that? Once we can ID it, we can determine the compatible springs.

Handy Person from Missouri
May 1, 2024 7:07 pm
Looks like this...
1 user uploaded image

Emily from SWISCO
May 2, 2024 8:07 am


Thank you very much! Our 15-087 comes to mind. This is compatible with the Series 180 coil springs. Since your pivot shoe cartridge is stamped 6R, I'd recommend the S180-06 6-pound coil spring.
Let me know if you have any questions!
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