Enhance your indoor air quality with the VEVOR 4" Air Filtration Kit. This powerful system features a 180 CFM inline duct fan that efficiently circulates air, making it perfect for grow tents and hydroponics. The included carbon filter effectively removes odors, ensuring a fresh environment. With an adjustable speed controller, you can customize airflow to suit your needs, whether for heating or cooling. The durable ducting ensures seamless ventilation, making this kit an essential addition for any indoor gardening setup. Breathe easy and cultivate success with VEVOR!