why is the top spiral balance short

A quick learner says:
May 10, 2023
why is the top spiral balance of my window shorter then bottom one.
Top = 28in Bottom is 32in. I order a S900-28 red tip and it should have been S600 red tip. Can I still use this for my window?
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Casey from SWISCO responded:
May 11, 2023

Hello,

If your spiral balances have a 5/8" diameter tube, I would not recommend trying to use the narrower S900 balances since they could buckle under the weight of your window. If you'd like to send back the S900 balances that you purchased and order the S600-28 replacements, our return policy can be found here. 

It is also not uncommon for the top and bottom sashes to use balances that are slightly different lengths if the sashes are different sizes. Thanks for posting and let us know if you need anything else! 
28" Series 600 Spiral Tilt Window Balance
28" Series 600 Spiral Tilt Window Balance
S600-28
$9.28
32" Series 600 Spiral Tilt Window Balance
32" Series 600 Spiral Tilt Window Balance
S600-32
$9.98
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