Need to replace sash balance for window with markings saying "Anderson ?? Minn.". Then the letters B F ? 10# can't tell whether it's 31 or 34. 12-86. See attached photos.
Bob from SWISCO responded:
September 16, 2020
See our 24-1033. This is meant to replace Andersen balances that include the stamp code 10#31, or 1031.