VIVOHOME 4 Inch 188 CFM Black Round Exhaust Inline Duct Fan with Variable Speed Controller for Indoor Garden Ventilation

The EFFICIENT FAN is a revolutionary air circulation solution that combines the benefits of both axial and centrifugal fans, providing maximum air flow at zero atmospheric pressure.

Its lightweight, durable plastic housing ensures long-term use, while the easy assembly process allows for quick installation and maintenance.

The universal mounting bracket allows for direction of airflow indication, and the variable speed controller enables adjustment to desired airflow levels.

With a less than 31 dB noise level, this fan provides quiet operation without disturbing your work or disrupting your grow room's environment.

Perfect for multi-purpose use in residential and commercial ventilation systems, this product is an ideal solution for maintaining a healthy grow room environment.