VV-GDFJ-EC4 4" Inline Duct Fan — 205 CFM Quiet EC-Motor Exhaust with Temp & Humidity Controller for Grow Tents, Hydroponics

Overview: This 4-inch inline duct fan is built to extract heat, humidity and smoke from confined indoor spaces — ideal for grow tents, hydroponic rooms, electronic cabinets, kitchens, basements and similar ventilation applications. It delivers steady, reliable air exchange to keep environments fresh and controlled. Performance: Provides 205 CFM of airflow to support ventilation and dehumidification across larger small spaces. The unit develops up to 200 Pa air pressure while running at 2900 RPM to maintain effective air movement where needed. Quiet, Efficient Motor: Fitted with a high-efficiency EC copper motor, the fan operates quietly (≤ 50 dB, about 28 dB in typical conditions) and reduces energy use by approximately 30%, helping extend motor life. Rated power is 21 W. Smart Controller: A supplied temperature & humidity controller offers ON/OFF, TIMER and AUTO operation with selectable triggers (High Temperature, Low Temperature, High Humidity, Low Humidity). The controller will automatically start or stop the fan based on the sensed conditions and includes an auto alarm. Note: AUTO mode can be disabled by pressing the UP and DOWN buttons together. The controller does not change fan speed automatically; speed adjustments must be made manually. Installation & Accessories: The package includes stainless steel clamps, hang-up slings, anti-vibration rubber pads and straps to simplify mounting. Install the fan suspended or secured to a wall to suit your setup. Model & Technical Specs: - Model: VV-GDFJ-EC4 - Airflow: 205 CFM - Air Pressure: 200 Pa - Noise Level: ≤ 50 dB (About 28 dB) - Rated Power: 21 W - Fan Speed: 2900 RPM - Motor Type: Copper Motor (EC motor) - Item Size (L x W x H): 11.8 x 9.2 x 7.1 in / 300 x 235 x 182 mm - Item Weight: 4.3 lbs / 1.94 kg - Voltage / Frequency: AC 110V-240V, 50/60Hz Durability & Use: Designed for continuous indoor use, the unit combines robust construction with included mounting hardware so you can quickly integrate it into ventilation, cooling booster or hydroponic setups.