4″ 150 CFM Inline Extractor Fan Carbon Filter Kit Hydroponic Grow Room Tent Air Ventilation System, iPower

4 Inch 150 CFM Duct Inline Fan Blower: Composite fan blades and center hub which reduces noise and vibration
4 Inch Filter: Dimensions, 4 inches Flange Ducting x 12 inches Length, Reversible flange. Free Pre-Filter included: We recommend replace the Pre-Filter every 6 months to protect your filter
4 Inch 8 Feet Uninsulated Aluminum Ducting plus 2 Stainless Clamps: Flame-retardant coating and corrosion-resistant wire helix, Temperature endurance range from 0 to 185°F. (-18? to 85?)
Fan Speed Controller: Variable Speed, Off, High, Medium, Low. To avoid the risk of burning out the fan motor, controller does not adjust below 50%
Multifunctional: This ventilation combo removes heat and eliminate the undesirable ill-smelling odors in the grow tent to solves air delivery problems without major system rework or expense