Anderson Window Balance

A home owner from NEW JERSEY says:
Looking for the part number to order for an Anderson window.
two numbers I can see are 11600-17

the second is not as easy
R97 4/19 1085
or
B97 4/19 1085
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Casey from SWISCO responded:

Hello,

Take a look at our 24-431 Andersen sash balance that will replace the 419 stamp on your original assembly. Thanks for posting! 

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