Aprilaire 4750 Maintenance Kit with Model 35 Humidifier Filter for Aprilaire Whole Home Humidifier Model: 700, 700A, 700M, 760, 768 Everything you need to maintain your Aprilaire humidifier is included in this oem Aprilaire humidifier maintenance kit, Aprilaire part number 4750.|Return your humidifier back to factory "new" condition each year.
