Features & Benefits

• Humidity for Health Aprilaire Humidifiers Can Help You Maintain Optimal Humidity in Your Home of 35% – 45% Which has been Shown to Reduce the Incidence of Respiratory Infections and Symptoms Related to Allergies and Asthma by Minimizing the Formation of Bacteria and Viruses, Fungi and Dust Mites
• In Addition, You'll Feel More Comfortable While also Preserving Items in Your Home Susceptible to Damage from Changing Humidity or Dry Conditions

Specifications

• Item: Maintenance Kit
• Used On Item: Humidifier
• Used On Model/Brand: 550/558
• Includes 10 Water Panel, 4218 Water Distribution Tray, 4217 Scale Control Insert, 4231 Orifice, 4004 In-Line Strainer, 4226 Feed Tube and Compression Sleeve, 4223 Drain Spud, 4184 Nozzle, Owner Manual