Left and Right for 24-837 Balancer?

A quick learner from Chambersburg,PA says:
I haven't taken the window apart yet, but based on window size, it looks like I need the 837 sash balancer.

Here's my question: Is there a left and right balancer for the 837. I replaced the balancer in some larger windows years ago and there was a left and right balancer required.

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Tom from SWISCO responded:

Hello! There is no right or left version of the 24-837 , no. There are some other Andersen operators that work that way, but this particular product can work for both sides interchangeably.

How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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