Mars Hydro 4/6 Inch Intelligent Inline Fan Carbon Filter Duct Ventilation Combo

1 x 4 flue pipe. Features of Mars Hydro 4" 6" Inline Fan Carbon Filter Ventilation System Grow Kits. 1 x 6 flue pipe.

Download the "Mars Hydro" APP. Size 1 : 4 Combo with Touch Screen.