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Aprilaire #4181 Scale Control Insert
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This is the u-shaped component which encases the Water Panel Evaporator. Their purpose is to direct any mineral which builds up back into the evaporative panel. They prevent water from leaving the evaporative section and entering another portion of the humidifier. This part may be shipped with white or black plastic - in either case the part is identical.
For use with models: 350 & 360 |