Hold onto hat if you're considering the Fully Loaded (FL) version,With definitely nothing like it on the market, it moves a ridiculous amount of air and, even better, it can be operated quietly. Not only does it feature the aggressive airflow upwards or downwards, it has 4 blowers installed in the front of the unit for directing air out the front of the unit.This version would be most appropriately used on top of components due to this feature and is definitely not for all applications. Most residential applications do not require this amount of airflow but when it is needed, you know where to find it.This is a very aggressive and versatile fullsized (same width as standard components)cooling unit. It circulates air away from components thus protecting equipment from heat accumulations and failures. This unit also allows for, and provides more advanced and unique features. The basic version features two top-quality 92mm Levitation fans that are mounted using special mounting hardware which eliminates noise caused by normal fan vibrations. The unit operates on DC voltage and, by adjusting the voltage, can be run silently or more aggressively depending on the application. This unit is ideal for directly cooling amplifiers and receivers installed in cabinetry or rack systems and can also ventilate entire racks and entertainment centers.