be quiet! 140mm Silent Wings 4 PWM Highspeed Fan

No Compromise Silence and Performance Silent Wings 4 140mm PWM high speed combines all features of a virtually inaudible with an extremely performant fan. A 6 pol motor and anti vibration mountings combined with fan blades optimized for maximum airflow make Silent Wings 4 140mm PWM high speed the perfect choice for the most demanding applications in high end systems. Features Optimized fan blades for the highest performance on radiators and heat sinks. Small tip clearance and fan frame with funnel shaped air outlets for extremely high air pressure. Very silent operation at maximum speed. 6 pole fan motor for less vibration and power consumption. Fluid dynamic bearing enables very smooth operation. Anti vibration mounting with push pins for installation as a case fan. An alternative screwed installation can replace the default mounting option. PWM controlled fan speed through the motherboard. Super long lifespan of 300,000h. Elegant look with high grade fan sticker in an all black design. 5 year manufacturer warranty.