Photo 1 of VIVOSUN T4 4" Inline Duct Fan & 3 Cycle Modes E12 Speed Controller, AeroZesh Grow Tent Kit Ventilation Fan with 210 CFM EC Motor, Programmable Exhaust Fan for Heating Cooling Booster, Hydroponics

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Photo 1 of VIVOSUN T4 4" Inline Duct Fan & 3 Cycle Modes E12 Speed Controller, AeroZesh Grow Tent Kit Ventilation Fan with 210 CFM EC Motor, Programmable Exhaust Fan for Heating Cooling Booster, HydroponicsPhoto 2 of VIVOSUN T4 4" Inline Duct Fan & 3 Cycle Modes E12 Speed Controller, AeroZesh Grow Tent Kit Ventilation Fan with 210 CFM EC Motor, Programmable Exhaust Fan for Heating Cooling Booster, Hydroponics