The GeneralAire 6019 is the correct replacement water supply tubing for the following humidifier models:
The GeneralAire 975-34 Humidifier Water Supply Tubing is a replacement water supply tubing for the GeneralAire 709R and 1042R Legacy Humidifier models. The 975-34 water supply tubing ensures the proper flow of water through your Legacy humidifier model in order to release moisture in your home. The GeneralAire 6019 is an OEM 709R and 1042R replacement part with 4' of tubing with 5/16" ID.
GeneralAire 975-34 Humidifier Water Supply Tubing specifications: