Andersen balance BL23 10#31 10-85

A quick learner from Bridgewater NJ says:
My embossed numbers are BL23 10#31 10-85. What is the new # do I need to order? Thanks for your help in advance.
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Paul from SWISCO responded:
Good morning, Ron.

Please take a look at the 24-1033 Andersen Sash Balance. This appears to be the correct replacement.
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