Small window balance

A handy person from USA says:
I am sending this because the online form did not work.

These springs are for a small bathroom non tilt out window (home built 1981). Sash weighs about 6 pounds (still in tracks). End pin is series 500 (5/8 dia 24 in long). In your listing the choices are red or blue. Which one do you recommend?

Would it be possible to create a chart on your site showing the weight ranges of springs relative to the plastic colors?


User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting, Jim! Considering that your existing balance looks to have a Red Tip, I would say go with that. However, two S500-24 spiral balances with Red Tips can hold a window sash weight of 7 through 29 pounds. Can you double check the weight of your own sash and confirm that it's only 6 pounds?

We will also work on a chart for these balance tips and their strengths!
A handy person says:
Terrific - just what I needed.
Got the parts on order.
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