Description
This is a new Aprilaire Humidifier Maintenance Kit 4788 US4788 Includes Parts 45 Water Panel (2), 4231 Orifice, 4004 In-Line Strainer, 4407 Water Distribution Tray, 4406 Float, 4405 Float Cover and 4403 Scale Control Insert For Models 400, 400A and 400M. It replaces the part numbers listed below.
Function:
Humidifiers increase the humidity in room or building. A humidifier that is attached to your HVAC system will increase the humidity coming out of the home's air duct registers.
Replaces Old Part #s:
4788
Repair Difficulty Level:

Partial List of Units that Use This Item:
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