The Atomic Compatible APRILAIRE45 humidifier water panel for Model 400 and 400 A filter 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. No need to run to Home Depot or Lowes for your Aprilaire water panel 45, Atomic will deliver right to your door. Great quality and price make this the perfect Aprilaire 400 humidifier filter replacement.
