Ventilation Kit, 4'' Filter, 8' Ducting, 500 CFM Inline Fan With Controllers & Thermohygrometer & Rope, iPower

4 Inch 190 CFM Duct Inline Fan Blower: Made with quality components for quiet operation. Composite fan blades and center hub which reduces noise and vibration. Free pair of 8-ft adjustable Ratchet Clip Hanger Rope: hold up to 150 lbs.
4 Inch Filter: Dimensions: 4"Flange Ducting x 12"Length; Reversible flange; FREE Pre-Filter included: We recommend replace the Pre-Filter every 6 months to protect your filter.
FREE 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).
One Control Switch for 3 settings: Variable Speed, OFF, HIGH, MED, LOW. To avoid the risk of burning out the fan motor, controller does NOT adjust below 50%. 4 inch 8 feet aluminum ducting, temperature endurance range from 0 ~ 185°F (-18? ~ 85?).
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.