VIVOSUN AeroZesh S4 4 in. Inline Duct Fan with GrowHub E42A Controller, Carbon Filter, 8 ft. Ducting Ventilation System

Ideal for moving and transporting air in various air circulation and ventilation projects. Its PWM-controlled, mixed-flow design delivers air efficiently across long distances while saving energy Intelligent Remote Environmental Control. The 38 mm Thick charcoal bed with high microporosity ensures its high absorption rate; Comes with a pair of rope hangers for easy mounting inside grow tents. Includes 2-heavy-duty stainless steel clamps designed to firmly fasten the ducting, preventing air leaks.