Choosing the correct balance

A quick learner from Apex, North Carolina says:
My double hung, double glass window has 3/8" diameter balances. The tube is vinyl? and has no color cap on the bottom of the balance. What is your suggestion for my replacement balance choice? My home is approximately 20 years old, and I have no idea what brand windows were installed. Thank you, and I look forward to your reply. Marty
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Tom from SWISCO responded:
Is your window a tilt type window? If so, I recommend our Series 900 spiral balance. You will need to weigh your sash on a scale to determine the proper tip color option, since your old balances have no tip.
A quick learner from Apex, NC says:
Tom, thank you for your reply. Yes, the window is a tilt type. I also need to replace the piece that holds the spiral in place and has the socket for the sash to lock into that allows it to tilt.
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Tom from SWISCO responded:
Sounds like you're talking about the pivot shoe. Could you show me a picture of yours? Can you also tell me its width and thickness?
A quick learner from Apex, NC says:
Hello, Tom. I'm sorry for the delay in responding to your last message to me. However, here is the info. you've requested: the sash weighs 19.4 pounds, and the tilt shoes are 2 1/4" long, 1 3/8" wide, 1/2" thick. They have blue rotators and 5900SB part #. I hope this gives you a better idea of what I need. Thank you for your patience with me, and I hope to hear from you soon. Marty
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Tom from SWISCO responded:
If the sash is 19.4 pounds, then either the White or Green tip option can work. You can see how much weight those options can support on the chart on the S900-35 store page.

I'm still not sure about the shoe. 1-3/8" is a peculiar width. Would you be able to show us a picture of it?
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
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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
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