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#4640 Aprilaire Scale Control Insert

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#4640 Aprilaire Scale Control Insert

• For use with Aprilaire model 500.
• This is the u-shaped component which encases the Water Panel Evaporator.
• Directs any mineral which builds up back into the evaporative panel.
• Prevents water from leaving the evaporative section and entering another portion of the humidifier.

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