SWISCO - The Replacement Hardware Authority

new spiral balance for old Terhmolock window

A quick learner says:
We have an old Thermolock vinyl double hung window. The balancer is 3/8" and 30" in length and has a blue tip. I was wondering what color tip I should use to replace this with.
Thanks!
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Paul from SWISCO responded:
Thanks for contacting us! Before I can recommend an applicable replacement spiral balance for you to look at, can I first ask if your window is tilt or non-tilt? Can I also ask what the weight of your window sash is? This will help me determine what tip color you should choose!
A quick learner says:
Thanks for getting back to me. This is a tilt window and weighs 20 lbs.
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Paul from SWISCO responded:
Thank you. I believe you may have a S900-30 spiral balance. Please double check and see if you agree. As for tip color, we have two options available:

The red tip can carry a sash weight range of 10 through and including 22 pounds, while the green tip can carry 14 through and including 26 pounds. They would both work for your window, but it's up to you which you would prefer!

Please keep in mind that the weight range capacity information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
A quick learner says:
Thanks for helping with this issue. I just placed an order for 2 S900-30 in the red tip.
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