1 piece 10.16 cm inline EC motor duct fan with variable speed controller for ventilation, exhaust fan for heating, cooling booster, grow tents, hydroponics (146 CFM)

A single 10.16 cm inline EC motor duct fan with a variable speed controller for ventilation. This exhaust fan is designed for heating, cooling, boosting air circulation in grow tents, and hydroponic systems. It has a maximum airflow of 146 cubic feet per minute (CFM).

【High Quality Material】 Durable metal housing, ideal for long duct runs. Designed to combine EC motors for truly quiet and energy efficient performance, the 4" radon fan is suitable for air temperatures from -4°F to 140°F.【Energy-Efficient Ventilation】Duct Size: 4" | Air Flow: 146 CFM | Noise: 48 DB | Air Pressure: 945 Pa | Speed: 7500 (RPM) | Size: 6.5 x 5.7 x 5.7 In【Super Wind Pressure】Hon&Guan inline fan mastered the core technology, the new generation of duct fans of wind pressure (945 Pa) is far ahead, can be more efficient air convection【Adjustable Controller】 The 4-inch duct fan includes a variable speed controller, which can adjust the air volume in ten steps, and the noise level is only 48 decibels even at the maximum air volume.【Application Scenarios】Designed to quietly ventilate grow tents,hydroponics, DIY 3D printers, and HVAC systems, transfer heating/cooling to rooms, circulate fresh air, cool AV closets, exhaust odors.