VEVOR Inline Duct Fan, 6-Inch 402 CFM with Temperature Humidity Controller, Quiet EC-motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics High-efficiency EC motor Quiet an Operation Innovative Airflow Control Ideal for Indoor Uses Complete Accessories Durable for Years to Come Airflow: 402 CFM,Noise Level: ≤ 50 dB (About 32 dB),Item Size (L x W x H): 12 x 10 x 8.4 in / 306 x 255 x 214 mm,Motor Type: Copper Motor,Model: VV-GDFJ-EC6,Air Pressure: 300 Pa,Rated Power: 38 W,Fan Speed: 2800 RPM,Item Weight: 5.3 lbs / 2.4 kg,Voltage / Frequency: AC 110V-240V, 50/60Hz