140mm PC fan with standard mounting space, the fan is ideal for computer case ventilation and water cooling radiator. Sealed Precision Fluid Dynamic Bearing: the bearing and the spindle are made of high quality compressed metal and are lubricated by a special oil film resistant to temperatures of up to 250C° / 480F°. This drastically reduces friction, ensuring smooth operation and reduced wear, which results in long life span and silent operation. Included antivibration rubber pads covering each corner of frame. These decouplers effectively reduce possible vibrations and allow silent operation. Newly designed blade and frame contribute high airflow with low noise, ideal thermal fan for computer case and CPU cooler/heatsink. PWM control offers wide range fan speed for various application and system. Connector: 4-Pin, Dimension: 140x140x25mm, Fan speed: 300±200~1800±10% RPM, Airflow: 16.8~100.8CFM, Noise: 4.19~26.45dBA, Static Pressure: 0.08~2.81mmH2O, MTTF: 120,000hrs