VEVOR Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics

VEVOR Inline Duct Fan, 4-Inch 205 CFM with Temperature Humidity Controller, Quiet EC-motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, HydroponicsHigh-efficiency EC motorQuiet an OperationInnovative Airflow ControlIdeal for Indoor UsesComplete AccessoriesDurable for Years to ComeAirflow: 205 CFM,Noise Level: ≤ 50 dB (About 28 dB),Item Size (L x W x H): 11.8 x 9.2 x 7.1 in / 300 x 235 x 182 mm,Motor Type: Copper Motor,Model: VV-GDFJ-EC4,Air Pressure: 200 Pa,Rated Power: 21 W,Fan Speed: 2900 RPM,Item Weight: 4.3 lbs / 1.94 kg,Voltage / Frequency: AC 110V-240V, 50/60Hz