4 Inch Air Filtration Kit(130 CFM): Inline Duct Fan with Speed Controller, High Carbon Filter, Ducting, Lanyard & Rubber Coupler

All-in-One Grow Tent Kit for Ventilation: Includes a HONGUAN 4″ inline ventilation fan, 10″ activated carbon filter, 8 ft flexible ducting, speed controller, coupler, and lanyard—everything needed for a complete ventilation system setup.Quiet & Energy-Efficient Ventilation Fan: The HON&GUAN inline ventilation fan offers strong airflow of 130 CFM at only 26dB, ideal for discreet grow tent air circulation and odor control.Advanced Odor Control: Carbon filter features RC 48 virgin charcoal with over 1200 IAV and a 38mm thick bed for maximum absorption—eliminating odors in hydroponics, grow rooms, and closets.Reinforced 3-Layer Ducting: Includes a durable dryer duct built with 2 layers of aluminum foil, a PET layer, and steel wire helix to ensure airflow stability and prevent tearing in grow room setups.Versatile Ventilation Use: This HON&GUAN grow tent kit supports ventilation and air purification for hydroponic grow tents, heating/cooling ducts, closets, electronic equipment rooms, kitchens, and basements.