Aprilaire 4792 Maintenance Kit with Water Panel 10

Aprilaire Humidifier Maintenance Kit 4792 includes everything you need to keep your Aprilaire Humidifier 500, 500A and 500M operating like new. Ensure peak performance for years to come. What's Included: 10 Water Panel 4640 Scale Control Insert 4223 Drain Spud 4231 Yellow Orifice 4335 Water Feed Tube 4331 Distribution Tray 4004 In-Line Strainer User Manual