Anderson window sash balance

A home owner from New York/Hicksville says:
i want replace anderson sash balance. The number is showing on existing sash balance is E119p27274. windows are prior to 1990 may be 1980's

or there is any sash balance replaces all numbers' please help me
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Paul from SWISCO responded:
Thanks for posting. Based on your "9p27" stamp, I recommend our 24-939 Andersen sash balance.
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