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Never run out of filters during the season with the Aprilaire 45 replacement cool mist humidifier water panel comes in a convenient 2-pack. The Aprilaire humidifier pad is the key component for generating humidity in your Aprilaire 400 humidifier system. The paper filter media absorbs water from the tray while a fan pushes air across the material. This causes air to pick up moisture where it then moves around the room. for optimal performance replace your filters at least 2 times a season.

Aprilaire 45 Specifications:

• Part Number: Aprilaire 45
• Service Life: 2-6 months
• Includes: (2) water panel evaporators
• Dimensions: 10"x12-3/4"x1-3/4"
• These are genuine factory replacement Aprilaire 400 evaporator water panel humidifier filters, also known as Aprilaire 45 water panel filters and April Air 45 filters.

The Aprilaire 45 is the correct replacement water panel evaporator for the following humidifier models:

Aprilaire

• 400
• 400A
• 400M