Replacing Bad Coil balance

A landlord from Louisville, KY says:
I have a bad coil balance that measures 3" tall and 1 1/4 wide, its on the right side of the window looking out. Is there more information that you need to figure this out? I am not a landlord, but the maintenance manager for campus buildings.
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Tom from SWISCO responded:
Yes, we will need quite a bit more information I'm afraid. If you can, please remove the pivot shoe from the window and show us a picture of it. We should be able to identify what balance system you need based on the shoe. Please also look over the coil springs themselves and tell me if you see something printed on them. There should be a number which we can use to determine the strength. If not, I will need you to weigh your sash and tell me what you get. I will also need to know how many springs are used on each side of the window.
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