Andersen Window Balancer Part Number Needed

A home owner from ILLINOIS says:
I can't seem to find the new conversion part numbers for 3 broken balancers for Andersen windows that were installed in 1986. The part numbers on the balancers are:

C29 6#31 4-86
BP25 12L 4-86
BP25 12R 4-86

Any guidance or info you can give so I can replace these with new part numbers, is much appreciated.
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Tom from SWISCO responded:

Hello! We can definitely help with these. I'll make each recommendation in the order of your original request:

  • For the 6#31, I recommend the 24-637.
  • For the 12L, I recommend the 24-13L.
  • For the 12R, I recommend the 24-13R.

Please let me know if you had any questions!

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