Andersen Window Balancer

A home owner from New Jersey says:
We have an Andersen Window with a balancer with the following numbers on it. Can you tell me which balancer I need to order from you? I will want to replace them as a set, left and right.

E29 9#318-85


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Tom from SWISCO responded:
Thanks for posting. I recommend that you look at our 24-939. This can replace Andersen balance boxes with the stamp 9#31 and will work for both sides.
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