Everything you need to maintain your April ire humidifier is included in this OEM April ire Humidifier Maintenance Kit, April ire part number 4750. Return your humidifier back to factory "new" condition each year! The April ire 4750 Maintenance Kit is designed specifically for your April ire 700, 700A or 700M Humidifier. It includes:#35 pad#4235 Feed Tube#4232 Blue Orifice#4004 Strainer#4246 Distribution Tray#4236 Scale Control Insert