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Aprilaire 4737 Resistor

Compatible with the following Aprilaire Humidifiers:
400/400A/400M, 600/600A/600M, 700/700A/700M, 760/760A, 768

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$21.34 Save 20% $17.08

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Part # 4737

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Aprilaire 4737 Resistor. This is the manual mode resistor for the model 58 digital auto humidity control. Use it if you do NOT want to install the outdoor air sensor.

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