The design goal of the low-rise fan is to allow fresh outdoor air to circulate under the house and porch. The continuous operation of the fan helps to discharge radon, exhausted gas from the treated wood, and other odors that may diffuse into the living area. <br>Design: Exhaust. (Air-Out) <br>Engine: Dual 120 mm <br>Total Noise: 48 dBA <br>Static Pressure: 5.46 mm-H2O <br>Operating Voltage: 12V DC <br>Power: 8.5W <br>Current: 0.8 A <br>Wall Adapter Input: 100 to 240V AC <br>Operating Humidity: 35 to 85% RH <br>Operating Temperature: 14 to 158℉