be quiet! Shadow Wings 2 140mm PWM Case Fan - Black

World-class quiet and solid cooling\n\nbe quiet! Shadow Wings 2 140mm PWM offers whisper-quiet operation and reliable cooling at low revolutions per minute. It is especially recommended for use in very silent PC builds.\n\nShadow Wings 2 fans are the perfect choice for all who appreciate maximum silence for their PC case.\n\n- Low-noise operation of up to 14.9dB(A) even at its maximum speed of 900 rpm\n- Airflow-optimized fan blades, resulting in a whisper-quiet operation yet solid cooling\n- Anti-vibration mounting system that prevents transmission of vibrations to your PC case\n- Rubberized fan frame minimizes vibrations\n- High-grade rifle-bearing technology that contributes to an operating lifetime of 80,000 hours\n- Secure and easy installation of the fan with push-pins\n- PWM controlled fan speed through the motherboard\n- Product conception, design and quality control in Germany