Mars Hydro 4" Inline Duct Fan/Carbon Filter with Speed Control
With a 4'' inline fan rated for 205CFM, an activated carbon filter with Australian charcoal, and a knob controller applied to allow easy switching and adjustment of the fan speed, the Mars Hydro 4 inch inline duct fan and carbon filter combo offers you everything you need to set up the ventilation in a grow tent. A good ventilation setup for grow tents measuring up to 3x3 feet.
Mars Hydro 6" Inline Duct Fan/Carbon Filter with Speed Control
With a 6'' inline fan rated for 402CFM, an activated carbon filter with Australian charcoal, and a knob controller applied to allow easy switching and adjustment of the fan speed, the Mars Hydro 6 inch inline duct fan and carbon filter combo provides everything you need to set up the ventilation in a grow tent. A good ventilation setup for grow tents measuring up to 5x5 feet.