The Phanteks SK PWM 140mm fan has a stylish, sleek look and has been optimised for airflow thanks to its nine blade design. The fan will complement the Eclipse line of PC cases in particular, but is ideal for anyone looking to have a fan that is both aesthetically impressive and solidly constructed.As a PWM fan (Pulse-Width Modulation) its rotation speed can be user controlled by connecting the fan to a compatible motherboard or Phanteks controller. As a result, users can choose whether they hey want the fan to run quietly or have enhanced airflow. Rubber dampeners, included with the fan, help further reduce fan noise.The Phanteks PWM SK 140mm fan at a glance:140mm PWM fanNine blade design optimised for air flowRubber dampeners for stability and quiet operationIdeal for use with the Phanteks Eclipse PC cases Specification:Fan Dimension (WxHxD): 140 mm x 140 mm x 25 mm / 551 in x 5.51 in x 0.98 inBearing Type: Rifle bearingBlade Geometry: Nine Blades Design (black)Rated Voltage: DC 12VOperating Voltage Range: 4 13VPWM: YesRated Current (Ampere): 100% 0.15A 0.02Locked Curent: Brake ProtectionPower Consumption: 2.64W +10% MaxSpeed: 500 1500 +5 /-10% RPMMax. Airflow: 84.5 CFM (ft3/min)Max. Air Pressure: 1.23 mm H2ONoise Level: 36 dB(A)Fan Connector: 4 Pin PWMCable Length: 550 mm / 21.65 inMTBF: 40 000 / hrsWeight: 153.5g