PH-F140SK 140mm Fan Black PH-F140SK_BBK_PWM The SK PWM fans provide a high airflow cooling solution with the nine-bladed design. With built-in PWM capabilities the fans offer precise control for high airflow or quiet cooling configurations. The included rubber dampeners and the unique rigid frame design further reduce vibrations and noise. The SK PWM fans are the perfect way to further increase the cooling performance of any computer chassis. Specifications: Model NO : PH-F140SK_BBK_PWM Fan Dimensions 140 x 140 x 25mm Speed (RPM) 500-1500 ± 150 rpm Max Airflow 84.5 CFM Acoustical Noise 36 dB (A) Static Pressure 1.23 mm H2O Rate Voltage DC 12V Operating Voltage Range 4-13 V MTBF >40,000 h Fan Connector 4 pins Cable Length 550mm Warranty 2 Years