Corsair Air Series CO-9050016-BLED blue LED case fan twin pack. These fans are designed to mount in standard 120mm slots. There are two fans as part of the kit. Corsair makes premium grade fans that move a lot of air at very low noise. These Case Fans are compatible with any case, water cooling setup, or other device that requires 120 mm fans. Both of the units are sleeve bearing with 1500 RPM rated spin rates, an air flow measurement of 52.19 CFM, and 25.2 dBA noise level. Tuned for high-airflow, large volume cooling with better performance than standard case fans. Translucent, frosted fan blades and Blue LEDs for a dramatic effect with nine ultra-thin fan blades and a sleeved bearing system for less vibration, noise and turbulence. AF120 Quiet Edition Twin Pack.