8"Inline Duct Fan with Konb Speed Controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

4"Inline Duct Fan with WIFI smart controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Grow Tents, Hydroponics,A Temperature Sensor and a Humidity Sensor are Included

6"Inline Duct Fan with Konb Speed Controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

4"Inline Duct Fan with Konb Speed Controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

8"Inline Duct Fan with WIFI smart controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Grow Tents, Hydroponics,A Temperature Sensor and a Humidity Sensor are Included

6"Inline Duct Fan with WIFI smart controller, Pure Copper EC motor, energy-saving and silent Ventilation Exhaust Fan for Grow Tents, Hydroponics,A Temperature Sensor and a Humidity Sensor are Included