Universal Applications: Take a deep breath and relax. Our inline duct fan is specially designed as an exhaust for heat, humidity, and smoke, improving airflow in air planting tents, hydroponic planting rooms, electronic equipment rooms, kitchens, basements, etc. Get ready to go with the flow. Blow Your Worries Away: Our inline fan provides a sufficient airflow of 200 cfm, enough to handle wide areas of ventilation and dehumidification, maintaining clean and fresh air circulation in dry environments all the time. Take control of any environment confidentially. Power in Silence: Are you tired of loud, obnoxious ducts? Well, get ready to work in silence! Our inline exhaust fan is equipped with a high-quality AC motor that ensures strong power at a low noise of 29 dB, which will not disturb your work and life. At the same time, the motor saves 30% on energy consumption, extending its service life. Control you can Feel: Do you want to get various airflow speeds at any time to achieve better ventilation effects while still being in control? Our inline air duct fan can be controlled via the manual knobs. You can adjust the speed to meet the ventilation needs of different environments. What are you waiting for? Go with the flow! Everything You Need: To save time and cut costs dramatically, we provide a 4-inch inline fan with hang-up slings and non-vibration rubber mats and straps, so you can finish the installation quickly! You are in control! Choose between hanging it or mounting it on the wall.