spiral balance replacement

A quick learner says:
I want to order "Series 900 Spiral Balance Product Code: S900-28". The exact length of my old balance is 28.25 inches. Can I just order 28 inches one? Thanks!

User submitted a photo of a window balance.
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Tom from SWISCO responded:
Thanks for posting! When measuring your length, make sure to only measure the tube--do not count the tip and the spiral protrusion in your measurements. If your balance still comes out to be 28-1/4", then we do recommend that you go with an even 28" length.
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