Aprilaire 4403 Insert 340793-762 While R407C has similar pressure-temperature

While R407C has similar pressure-temperature characteristics to R22

Reliable Protection: Integrated impedance and overload thermal protection prevents winding failure during restricted airflow conditions

5 inches in depth

and RGLS series

Aprilaire 4403 Insert 340793-762 While R407C has similar pressure-temperatureThe Aprilaire 4403 Scale Control Insert is a critical humidifier replacement part engineered specifically for the Aprilaire Model 400 series, including the 400A and 400M. This U shaped component serves as the structural frame for the water panel, ensuring it remains properly positioned for optimal evaporation. Designed with a built in float chamber, the 4403 manages water levels effectively to prevent internal leakage and overflow. Its primary