Searching for Andersen Sash Valance R11600-17

A quick learner says:
I'm trying to replace two Andersen Sash valance, R11600-17 but I'm not sure of the new part #'s.
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Casey from SWISCO responded:

Hello,

Based on the 6#23 stamp shown in your photos, you would need the 24-637 Andersen sash balance to repair your window. Take a look and thanks for posting!

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