1 X 4231 - Aprilaire OEM Replacement Humidifier Yellow Water Orifice by Aprilaire

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. For use with models 400, 500, 550, 550A, 558, 560, 560A, 568 & 600

• Precise Water Metering: Accurately controls water flow into your humidifier, ensuring optimal humidity levels
• Durable Construction: Made from robust Thermoplastic - POM, ensuring long-lasting performance
• Wide Compatibility: Fits a broad range of Aprilaire humidifier models, including 400, 500, 550, 560, 600, and 700 series
• Easy Replacement: Simple to install, maintaining your humidifier's efficiency with minimal effort
• Yellow Color Indicator: Clearly identifies the orifice's flow rate, designed for 3 gallons per hour