balancing hardware for narroline series 2000 andersen windows - double sash - non-tilting

A handy person from albany new york says:
please see above - window numbers 2442 and 2432 - four balancers (cord providing) devices needed
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Paul from SWISCO responded:
I'm not sure what to recommend. The 2432 might use our 24-531, and the 2442 might use the 24-737, but that is no guarantee. The only way to know for sure what balance box you need in either case is to remove the existing balances and show us a picture of the stamps printed on each.
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