Aprilaire 4231 Replacement Humidifier Yellow Orifice
This Yellow Aprilaire orifice is for use with Aprilaire models 350, 360, 440, 700, 760, 760A and 768. These are the tiny nylon components which, accurately meter the flow of water into your humidifier. They allow a specific amount of water to go into the humidifier, some of which is evaporated and some which performs the important flushing action. This keeps the Water Panel clean and reduces maintenance to a minimal amount.
