Aprilaire 4788 - Maintenance Kit for Humidifier Models 400, 400A, 400M

The Aprilaire 4788 maintenance kit contains everything you need for your annual maintenance needs.  Completing this maintenance will keep your humidifier running cleanly and efficiently.

The 4788 Maintenance Kit includes:

• Water Panel 45 (2 pack)
• Scale Control Insert 4403
• Water Distribution Tray 4407
• Float Assembly 4406 includes 2 floats and the cover
• Feed Tube and Compression Sleeve 4335
• Orifice 4231
• Inline Strainer 4004
• Owner's Manual