Vivisun 4" Ventilation Fan

VIVOSUN 4-Inch 190 CFM Inline Duct Fan with Carbon Filter
Powerful Airflow Fan: Heavy hitting blower with a fan speed of 2300 RPM for an airflow of 190 CFM; Puts out only 31 dB noise level. Moves air through your target location efficiently for optimal ventilation.
Superior Carbon Filter: 1050+ RC 48 Australian Virgin Charcoal Bed. Dimensions: 4" x 14".
Effective Odor Control: The carbon filter eliminates some of the most undesirable odors, pungent smell, and particulates from indoor grow tents, hydroponics grow rooms.
Free Pre-Filter Included: We recommend replacing the pre-filter every 6 months or after the completion of each grow cycle.
Versatile Applications: Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, etc