Would like to confirm the right window balance

A quick learner from Bathroom says:
August 26, 2023
I am replacing both balances in my bathroom window. they both have the same identifiers on them. I believe I need 24-637 but it didn't say it was a double sash, which my window is, so I wanted to check. you have to zoom in on the picture to see the numbers but it does read C39 6#23 12-86
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Bob from SWISCO responded:
August 27, 2023

Thanks for posting. See our 24-637. This is meant to replace Andersen balances that include the stamp code 623, or 6#23. 
Andersen Sash Balance, 623, 627, 631, 637
Andersen Sash Balance, 623, 627, 631, 637
24-637
$54.20
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