4 Inch Inline Fan

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Mars Hydro 4 Inch Inline Duct Fan and Carbon Filter Combo with Speed Controller
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US$129.99
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Enjoy peak ventilation experience with Mars Hydro Inline Fan & Carbon Filter Combo Package Include: 4" inline duct fan with speed controller, 4" carbon filter, 33ft length flex ducting,3 Duct Clamps. Only the Canadian version is different in color and has the same devices and functions …
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Mars Hydro 4 Inch Inline Duct Fan and Carbon Filter Combo with Thermostat Controller
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US$169.99
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Refreshing Your Grow Room: Mars Hydro inline fan and filter kits are designed to quietly ventilate indoor grow rooms/tents, transfer heating/cooling air in and out, and eliminate odors.