SWISCO - The Replacement Hardware Authority

I'looking for a sash balance box.

A handy person from Westchester, NY says:
I need a sash balance replacement.
Which one should I get?

my balance has this numbers
D30 7#27 185
also has
11600-17

Thank you.
User submitted a photo of an Andersen window balance.
Profile picture of Donna
Donna from SWISCO responded:
Hello! We recommend our 24-737 for all Andersen balances stamped with 7#27.
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