The Max-fan series is a unique diagonal tube fan made to perform its task efficiently, powerful and less noisy. The rotor-stator system makes Max fan the most efficient fan on the maket. The rotor pushes the air to the outside in a swirl, while the strator transforms this swirling in a uniform air jet. this prevents pressure loss, noise and unnecessary power consumption. The speed of the Max-Fan can be operated with a voltage or frequency controller. And as protection for the motor, there is also a thermal switch, this turns off at the moment when the engine reaches a dangerous operating temperature.