Andersen balances 637h24 0506 AND 637 h73 5/4

A contractor from northampton, ma says:
the numbers on your replacement balances do not resemble the numbers on either the existing old balances or the numbers I have for new ones purchased somewhere? about a year ago.....

these are the numbers I have, could you tell me would be the appropriate replacement?

637h24 0506 AND 637 h73 5/4
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Paul from SWISCO responded:
Thank you for posting. Please take a look at our 24-637 Andersen sash balance, which can be used to replace balance boxes printed with the number 637. Do you think this could work for you?

Be sure to also take a look at our tutorial video on how to replace Andersen sash balances.
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