Anderson window balance replacement

A quick learner says:
August 23, 2014
Appears to be original sash balance. Stamped Anderson D58 7#27 1-78

Do you have a replacement?

Thanks
User submitted a photo of an Andersen window balance.
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Tom from SWISCO responded:
August 25, 2014
Sure, I recommend our 24-737. This can replace Andersen balance boxes stamped with 7#27.
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