Get old/humid air out of your grow room/tent, and replace it with cool, fresh air from outside!
 
Package Include: 4"inline duct fan with speed controller, 4"carbon filter, 33ft length flex ducting,3 Duct Clamps
4 Inch Inline Duct Fan with Variable speed controller for easy fan speed adjustment.Durable plastic fan housing and blades for extremely low noise(28 dB).Powerful Motor is more energy efficiency and quieter operation.
Superior carbon Made of imported Virgin Australian activated charcoal, delivering 100% filtered airflow, eliminate some of the most undesirable odors, pungent smell and particulates from indoor grow tent, hydroponics grow room.
Effective & Quiet Ventlation Kit: Excellent odor control,4" Inline duct Fan is rated for max 205CFM. With fan speed controller, noise min to 28dB. Filter with built-in Australian virgin charcoal granules which enables to absorb exponentially more contaminants and allergens than traditional carbon.
Perfect Growth Partner: Fast assembly,work as a cost-effective,convenient ventilation combo.Satisfaction Guarantee: any problems will be responded in 24 hours.