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A contractor from Galveston Texas says:
I need approx. 6 ballasts for 3 windows
Thumbnail of the uploaded file named Sticker
Thumbnail of the uploaded file named Spiral Balance
Thumbnail of the uploaded file named Spiral Balance 2
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Lauren from SWISCO responded:

Hello, thank you for posting,

It appears that your window uses tilt window spiral balances. You could either have the Series 600 with a 5/8" diameter tube or the Series 900 with a 3/8" diameter tube. You will need to measure the length and the diameter of the original tube to confirm the best fit. 

From there the balance should have a colored tip that you will need to match up with our strength options. If there is no color, or it does not match, you will need to weigh the sash and compare to the strength chart on the product page to choose the correct option.

Please review and let us know if you have any additional questions. 

A contractor from Galveston Texas says:

Hi Lauren -

RE: TUBES

Please provide me both

1. Series 600 with a 5/8" diameter tube

2. Series 900 with a 3/8" diameter tube

RE: COLORED TIP

Please provide based on sash weight = 10-15 pounds

Holly

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Lauren from SWISCO responded:

Hi Holly,

What is the length of the original balance tube? 

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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