iPower Inline Duct Fan 4 Inch 200 CFM with Variable Speed Controller, Exhaust HVAC Blower for Grow Tent, Basement, Greenhouse, Attic, Black

Low Noise Level: High quality fan blades rotate smoothly and powerfully, which helps to collect airflow volume and reduce noise output; Noise below 30 dB will not affect your work and life,Powerful Ventilation: This efficient blower with a fan speed of 2400 RPM for an air flow of 200 CFM. Inline duct ventilation fan effectively circulates air for room ventilation and odor purification,Adjustable Speed: Inline duct ventilation fan with speed controller on the power cord enables the fan to run at different speeds, you can adjust it to desired airflow level according to your requirement,Easy Installation: Removable duct ends with locking tabs for quick removal and easy maintenance. Universal mounting bracket for direction of airflow indicating,Wide Applications: Suitable for industrial, household and horticulture ventilation applications, which can help you maintain a healthy grow room. Ideal solution for multi-purpose use in residential and commercial ventilation