Ventilation Kit, 4 Inch 150 CFM Inline Filter with Fan Speed Controller and Thermohygrometer, 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
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%
Free High Reliability and Accuracy Humidity Monitor: Fast response that measures every 10 seconds, wide measuring range that measures temperature from 14? to 122??-10?~50?). Humidity sensor measures humidity from 10% to 99%. Powered by 3V CR2032 button battery (included)
Multi Functional: 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
Power Source Type: Corded Electric