Aprilaire 4231 Humidifier Yellow Orifice - Pack of 2

The Aprilaire 4231 Humidifier Yellow Orifice is a replacement part for Aprilaire humidifier models 350, 360, 700 amp; 760. The Aprilaire 4231 Humidifier Yellow Orifice is a small nylon component that helps accurately meter the water flow going into your humidifier. The Aprilaire 4231 Humidifier Yellow Orifice allows only a specific amount of water into your humidifier. The Aprilaire 4231 Humidifier Yellow Orifice also helps to reduce maintenance by helping to keep the water panel clean.