Spiral balance color tip

A quick learner from TX says:
My old balances do not have a color tip. These windows are at my lake house and I cannot weigh the sash. They are non-tilting aluminum windows 36X60. Can you help me figure out what color tip I should order?
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Paul from SWISCO responded:

If your current spiral balance does not have a color tip on it, the only way to decide on the most appropriate color tip would be to weigh your sash on a scale and refer to the sash weight chart on the product page. I see you have referred to the S306-29. I am going to copy and paste the information of the product description to this response because I think it will be very helpful to you:

The strength you need should be indicated as a color tip at the end of your old metal tube. If you do not see a color tip weigh your sash on a scale and refer to the chart below.

The metal tube measures 3/8" in diameter.

Can work for either the left or right side of the window interchangeably.

Spiral window balances come fully lubricated and ready to be charged.

Color Tip Sash Weight Range

Red 10 to 22 lbs

Green 14 to 26 lbs

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