The Corsair QL120 3-Pack refers to a popular computer case fan kit featuring three 120mm RGB fans, known for their dual-sided lighting (four light zones, 34 LEDs per fan) for stunning visuals, quiet performance (hydraulic bearings, PWM), and control via Corsair's iCUE software, all managed through an included Lighting Node CORE controller for easy setup. These fans offer great airflow (up to 41.8 CFM) and static pressure, making them ideal for cooling and aesthetics, available in both black and white.