Get maximum airflow with this twin-pack of AF120 Performance Edition fans! Designed to move a lot of air and keep your computer components running nice and cool, these specially designed performance fans work great in tandem, acting as either exhaust or intake fans. Custom molded for high performance with low noise, these fans strike the perfect balance between silence and power. Performance Edition TWIN PACK. The Air AF120 fans let you have it all. Nine ultra-thin, custom-molded blades push ample air volume. Rubber corners dramatically reduce vibration. The advanced hydraulic bearing system is quiet and reliable, and you can customize the look with the three included colored rings. AF models performs best in unrestricted spaces with at least 3cm of clearance, and they're ideal for mounting at the rear or top of your PC case as exhaust fans for your PC's motherboard and CPU, graphics accelerators, and other components Filling the case with heat. They work equally well for unrestricted intake fans, for areas like side panels or bottom intakes.