Anyway, can you tell me if I need the 23A or 23B based on the stamped info? I don't have access to the window at the moment so I don't know the sash weight. The vinyl sash measures 32 1/8" wide X 26 1/8" high and is insulated glass with grill, American Craftsman Buck Series 50.
I've attached a picture of marking on broken channel balance.
Thanks,
Jerome
