4-Pack, Prolimatech Red Vortex 12 LED - High Static Pressure and Airflow Fan (120mm) The 4-Pack includes four Red Vortex 120mm LED Fans. The Red Vortex 12 LED is an extremely powerful 120mm computer fan that provides both high level performance and quiet operation. The fan features 4 Ruby Red LED's and translucent red fan blades. The Red Vortex 12 LED desktop fan moves up to 72 CFM of air while only producing 29.1 dBA of noise. Featuring two speed settings and an included low-voltage-reducer cable, the Red Vortex 12 LED case fan can be run at either 1600 RPM for maximum performance or 1200 RPM for a quieter environment. The Red Vortex 12 LED offers excellent static pressure: 1.05 mmH20 at 1600 RPM and 0.80 mmH20 at 1200 RPM. The adjustable fan speed and static pressure allow the Red Vortex 12 LED to operate as either a very powerful radiator fan or as a quieter case fan.