Not sure what series I need to order

A quick learner from PORT Chester NY says:
I'm not sure what series I need to order.
I have two different size windows I need to order parts for.
The one in the picture with the white tip is 17 inches.
Another window has a red tip and is 25 inches
Please help me get the correct spiral balance.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Is this for a tilt window? Also, can you confirm the diameter of the outer tube? I suspect is it 5/8". If so, I recommend our Series 600 spiral balance. You may want to weigh your sash on a scale to determine the proper color tip option.
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
VIDEO
WATCH >
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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