Tier1 Replacement for Aprilaire 45 Models 400,400A, 400M Humidifier Filter (2-Pack), Whites
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The #45 Aprilaire Humidifier Replacement Filter by Tier1 is the heart of your humidifier, designed specifically to deliver the proper humidity to your home during the heating season. The Aprilaire water panel 45 fits the Aprilaire Humidifiers 400, 400A, and 400M. This product reduces pollutants from the water used by your humidifier, producing better indoor air quality. Replace annually for best results. Color: Whites.


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