Searching for C19 6#31 6-85

Question

I need to replace 3 of these window sash balancers. These original windows were installed in approximately 1985.
The only characters that can be seen as follows:
C19 6#31 6-85

Tom · Accepted Answer

Thanks for your patience during this busy season. Please see our 24-637, this should replace any Andersen balance marked with "6#31."