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White Orifice Aprilaire #4007 Review

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White Orifice Aprilaire #4007 Description

#4007 Aprilaire White Orifice For use with Aprilaire models 110 & 220 These are the tiny nylon components which accurately meter the flow of water into your humidifier Allows a specific amount of water to go into the humidifier, some of which is evaporated and some which performs the important flushing action. Keeps the water panel clean and reduces maintenance to a minimal amount. AirFilters.com This orifice is for use with Aprilaire models 110 and 220. Orifices 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.