Mars Hydro 6'' Inline Fan uses a mixed-flow design to maintain peak performance in a high static pressure environment. GROW TENT FAN: MARS HYDRO inline fans are designed to ventilate hydroponic grow rooms, transfer heating/cooling, cool AV closets, and exhaust odors. EFFECTIVE VENTILATION: Variable speed controller for easy fan speed adjustment. Optimal ventilation for your planting. LOW NOISE LEVEL: Durable plastic fan housing and blades for extremely low noise(35 dB); create a truly quiet growth environment. EASY INSTALLATION: Removable duct ends with locking tabs for quick removal and easy maintenance and a cord length of 4.9 feet for hassle-free setup. This grows tent fan with a controller for easy fan speed adjustment. BASIC PARAMETERS: Ventilation exhaust fan size: 6” | Dimensions: 12.4 x 8.8 x 8.8 in. | Weight: 5.8. lb. | Airflow: 350 CFM | Noise: 35 dB | Bearings: Dual Ball. WEIGHT(KG) 0 FAN SIZE 6'' SPEED CONTROLLER Yes We have new website, Here are the links: CA: www.