Aprilaire 4793 Humidifier Maintenance Kit for 550, 550A and 558 series Purchase this handy Aprilaire 4793 maintenance kit and say goodbye to the hassle of keeping track of when to clean or replace the various components in your Aprilaire humidifier. Simply buy this kit and you can return your Aprilaire humidifier back to factory "new" condition each year! Check out this convenient annual humidifier maintenance kit from Aprilaire! Everything you need to maintain your Aprilaire humidifier is included in this OEM Aprilaire Humidifier Maintenance Kit, Aprilaire part number 4793. The Aprilaire 4793 Maintenance Kit is designed specifically for your Aprilaire 550 Humidifier. It includes: #4004 - Inline Strainer #10 - Water Panel #4231 - Yellow Orifice #4223 - Drain Spud #4226 - Water Feed Tube #4217 - Scale Control Insert #4218 - Distribution Tray

• Heating, Cooling & Air Aprilaire 4793 Humidifier Maintenance Kit for 550, 550A and 558 series#0055/34

Heating, Cooling & Air Aprilaire 4793 Humidifier Maintenance Kit for 550, 550A and 558 series#0055/34Air Conditioners