iPower 4 Quiet Inline Duct Fan with 10-speed Controller, 214 CFM Ventilation Exhaust Fan EC Motor for Heating Cooling Booster, Hydroponics, Grow Tents, Black

Quiet and Efficient Performance: 4 quiet inline duct fan featured PWM-controlled EC motor, 4 inch inline fan operates quietly 29 dB, which providing 214 CFM airflow. Its energy-efficient design ensures minimal heat output and low power consumption of 30W,Accurate Speed Control: iPower inline fan equipped with a wired 10-speed fan controller, 4 ventilation fan offers flexible control over airflow, which is compatible with intelligent programming app controllers, also remote control via smartphone apps,Product Specifications: Size-4 inch; Speed-3000RPM; Airflow-214 CFM; Engine-EC-Motor PWM; Noise-29 dB; Power-30W; Voltage-110V; Frequency-60HZ; Power Cord Length-4.3FT; Controller Cord Length-7.5FT,Unique Design: 4 inch inline ventilation fan adopts PWM-controlled construction, also equipped with a wired 10-speed fan controller, portable and compact fan takes up minimal space, suitable for applications where larger fans just won't fit,Wide Applications: 4 inline duct fan can clean and freshen the air, improve airflow to reduce humidity, block odors, and lower temperatures in grow tents, grow rooms, greenhouses, hydroponics, basements, kitchens, bathrooms, basement workshops, etc