SWISCO - The Replacement Hardware Authority

D13 7#31 9 80 Andersen Balance

A quick learner from Connecticut says:
I have taken apart the window to find the part number for a Andersen windows I have and I can't find the replacement part number I need. The part number stamped is
D13 7#31 9 80. Can you help me find a replacement part?
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Tom from SWISCO responded:
Thank you for posting! Please see our 24-737 Andersen Sash Balance, which can be used to replace balance boxes with the stamp 7#31.
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