Need replacement sash balance for Andersen double hung windiw

A quick learner from Idaho Fall, Idaho says:
I need a replacement sash balance for a double hung Andersen window that is 34" wide, 54" length. The markings on the sash balance we have currently are 11600-17 on the body of the unit and 827 K78 1153 on the "lip" of the unit by the staple.
Thumbnail of the uploaded file named 827
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Casey from SWISCO responded:


The (827) stamp on your balance indicates that you could use our 24-837 Andersen sash balance as a replacement. Thank you!

A quick learner from Idaho Fall, Idaho says:
Thanks so much for the quick reply! I sure appreciate your help. Will order it right away.
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