Anti-vibration mounting system Long-life bearing Unique Fan blade design Higher Air Inflow, less noise High airflow and low noise with 11-fan-blade design High airflow and low noise with 11-fan-blade design Long life sleeve bearing Color:White Thermaltake LUNA 20 sleeve bearing white LED silent fan for computer cases, CPU coolers, and radiators provides efficient and quiet cooling. The 200mm fan offers ultra low noise. An anti-vibration mounting system enhances stability during operation.