Spiral balance and shoe. Help, please.

A quick learner from USA says:
Here's a picture of the windows are in question
two of them are red and
the other ones a yellow color are all 28 inches long.
User submitted photos of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Mark. Can you confirm the diameter of your balance's outer tube? It looks like it could be 5/8" or 9/16", in which case I'd recommend our Series 600 spiral balance. If it's skinnier at 3/8", see our Series 900 instead.

I'm not as sure about the shoe. Can you give me its thickness and width?
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