Premium quiet fan, 200x200x30 mm, 12V, 4-pin PWM, max. 800 RPM, max. 18.1 dB(A), >150,000 h MTTF%ocs%ATTENTION: 200mm diameter (7.8 inches) and a thickness of 30mm (1.18 inches). Please make sure you have sufficient space in your case.%ocs%Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance%ocs%Large 200mm diameter for high airflow performance at extremely low noise levels, three sets of mounting holes (154×154, 170×170 & 110x180mm)%ocs%Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header