The GeneralAire 7639 is the correct internal hose kit for the following humidifier models:
The GeneralAire 50-23 Humidifier Internal Hose Kit is an internal hose kit for use with the GeneralAire Elite Steam Humidifier models DS50 and DS50LC. The 50-23 internal hose kit ensures the proper flow of water through the tank and for the desire release of warm moisture in your home. This is a genuine GeneralAire replacement part that is made from high quality construction material that is very durable.
GeneralAire 50-23 Humidifier Internal Hose Kit specifications: