Moline Metal Windows

A landlord from Wisconsin says:
October 4, 2017
We need to replace the springs in the metal windows we have at an old building that was a school. The tracks are still in good shape, but the spring insert is damaged. Hopefully you can tell from the pictures what this is. I cannot find any information on the windows themselves.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
October 10, 2017
I'm having a hard time identifying what you have from this picture. Can you tell me if the window is tilt or non-tilt? Can you also Show me a picture of an undamaged balance? I would also like to know the diameter and length off the outer tube. Finally, please show me a picture of the bottom of the spiral itself. If we can see that on an undamaged balance, it would be ideal.
A landlord from Wisconsin says:
October 13, 2017
I will try and find a undamaged one to get a picture of also, but they are a tilt out window. attached are more pictures and sizes.

The outer tube a black plastic 1/2" tube
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
October 19, 2017
I am fairly confident that this is the Series 900. You should confirm the 3/8" tube diameter, since there is nothing in this style with a 1/2" tube. It should be 3/8" or 5/8", so measure carefully and choose.
33" Series 600 Spiral Tilt Window Balance
33" Series 600 Spiral Tilt Window Balance
S600-33
$10.15
How to identify a replacement spiral balance
How to identify a replacement spiral balance
VIDEO
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How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
VIDEO
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How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
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How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
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How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
GUIDE
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