Aprilaire 8120X Ventilation Controller

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The Aprilaire 8120X Fresh Air Controller is a replacement duct-mounted fresh air control for Aprilaire fresh air ventilation systems. Comes with an outdoor air sensor and automatic ally stops fresh air when the outdoor air is too cold or too hot. It prevents indoor air from exceeding 60 percent relative humidity (RH). Compatible Models Aprilaire 8145A Fresh Air Intake Ventilator Aprilaire Ventilation Control Kit Aprilaire Energy Recovery Ventilator Show more