Andersen Corp BE7 9#31 11-85 11600-17 on opposite side; 1600-3 US Pat. 3335455 1967
Lauren from SWISCO responded:
August 15, 2023
Hello, thank you for posting,
Based on the 9#31 stamped on the balance box, please review the 24-939 Andersen sash balance as replacement. Let us know if you have any additional questions!