Cryorig XF140 CR-XFA 140mm PWM Case Fan 26mm Thick HPLN (High Precision Low Noise) bearing system, offering stable and precision rotation eliminating excess vibration and noise. Built in Acoustic Vibration Absorbers, every XF140 is ready for low noise operation right out of the box. Choose among 3 different colored Acoustic Vibration Absorbers to match your system and case.