iPower 4 Inch Ventilation Booster Fan with Speed Controller for Grow Tent, Basements, Workshops, HVAC Exhaust and Intake, 4, Silver

Used as intake fan to bring fresh air into grow rooms, help to boost airflow in HVAC units to remove exhausts and odors from workshops and ventilate basements & attics, etc. Fan comes with a variable speed controller, enabling you to adjust the speed and airflow of the fan. The motor on the fan is not enclosed and is not to be used in high humidity environments. Diameter: 4 inch; Air Flow: 90 CFM; Speed: 3200 RPM; Voltage: 110-120V; Wattage: 15 W; Max Operating Temp of Motor is 130? / 266?; Max Ambient Temp is 60? / 140?; 4.9 feet grounded power cord.