Andersen Balance 11600-17

A home owner from Kinnelon, New Jersey says:
What is the correct replacement for Andersen Sash Balance 11600-17, also shows B44 #19 4 87?
On the back side is stamped 11600-3. Also what I beleive are patent numbers 35455 and 1967 CAN.
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Paul from SWISCO responded:
Thanks for posting. Please take a look at our 24-431 Andersen sash balance, which will replace an Andersen balance box with a 4#19 stamp.
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