29" channel balance spring and pulley says 2830 stamped on it NuAir windows

A home owner from Wesley Chapel Florida says:

NuAir Windows - 27 year old house- need to replace both balances on 2 windows - need to verify if your products will perform with the NuAir windows thank you

Bob

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Bob from SWISCO responded:

See our S380-29 or S385-29. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. You'll need a stamp option of 2830. 

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