Dual 120mm High CFM Computer Fans with AC Plug, AC 110V - 240V Variable Speed Fan, Cooling for Server Closet Cabinet Mining Machine Chassis Workstation

Powerful fan 240mm Two 120mm fans are connected together, running speed is 900rpm x2 to 3000rpm x2, generating a constant and continuous flow of air keeping everything cool and temperatures down and if there is a need for more air flow the included dial controller allows you to increase the air flow.
Controllable SpeedAllows you to vary the voltage / speed of the fans. you can adjust the fans speed to optimize the airflow and noise for your application.
Dual Ball Bearing Which contribute to smooth running and a longer lifespan. Almost it can run 24/7 for over 6 years.
Plug and Play The speed controller has a standard two prong wall plug feeding a power supply. enables the fan to be powered through an AC outlet; Just plug it into a socket and start the fan.
Protective GrillesComes with grilles that you can fix them on both sides of fan to keep fingers away, This set also comes with bolts that thread into included rubber feet.