preventing contact pitting and ensuring high-capacity performance

inspect the pre-filter every 30 to 60 days

eliminating the need for mounting modifications or wiring adapters

Flexible Voltage Logic: Supports both 115V and 230V configurations

Speed selection depends on your system's static pressure

Aprilaire 4330 Scale Control Insert 326058-758 preventing contact pitting and ensuringThe Aprilaire 4330 Scale Control Insert is a critical component designed to maintain the efficiency and performance of your whole house humidifier. Specifically engineered for use in Aprilaire Model 400, 400A, and 400M units, this high quality humidifier replacement part effectively captures mineral deposits and scale buildup from the water panel. By managing evaporator scale control, the 4330 insert prevents excess mineral accumulation from clogging