I need to replace my sash balance on a Anderson double hung the numbers on it are 519 also has 11600-17 and I believe date 4-89 could you tell me the replacement part number. I change both is their a difference between left and right numbers are the same
Tom from SWISCO responded:
April 8, 2014
Thanks for posting. Check out our 24-531. This can replace Andersen sash balances with the stamp 519.