Andersen Window Balance Help

A contractor from Elkton, MD says:
I have a set of balances from an old Andersen double hung window that need replacing.
The balance dimensions are 6-5/16" X 3" X 3/4".
One is stamped 725 1 B23 1290
The other is stamped 725 1 BD56 1290

Would you have a replacement for these?
By the way, you guys rock.

Dave E
User submitted image of their window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting, David. Based on your stamp of "725," I would recommend our 24-737 in both instances.
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