High airflow and low noise ndash now you can have both the air series af140 fans let you have it all eleven ultra thin custom molded blades push ample air volume rubber corners dramatically reduce vibration the air series af140 fans let you have it all eleven 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 the air se