The GeneralAire 7305 is the correct replacement open end drum for the following humidifier models:
The GeneralAire 12855 Humidifier Open Drum End is a replacement open drum end for the GeneralAire Model 65 Humidifier. The GeneralAire 12855 open drum end fits into the 65-5 evaporator sleeve on the opposite side of the 12854 closed drum end. The GeneralAire 7305 is a genuine replacement part for your 65 model humidifier.
GeneralAire 12855 Humidifier Open Drum End specifications: