The GeneralAire 40-5 is the correct replacement filter for the following humidifier models:
The GeneralAire 40-5 Humidifier Pad Filter is a replacement evaporator plate for GeneralAire Model 40 humidifiers. This humidifier pad filter helps your Model 40 humidifier operate at peak efficiency and provide your home with the desired amount of humidity and moisture. This evaporator plate is a genuine GeneralAire replacement part and is quality made. GeneralAire recommends that you replace the 40-5 unit once a year to achieve the best results.
GeneralAire 40-5 Humidifier Pad Filter specifications: