Thermaltake CL-F042-PL12SW-B. Type: Fan, Fan diameter: 12 cm, Rotational speed (min): 800 RPM, Rotational speed (max): 1500 RPM, Noise level (low speed): 18.5 dB, Noise level (high speed): 26.4 dB, Maximum airflow: 40.6 cfm, Minimum air pressure: 0.57 mmH2O, Maximum air pressure: 2.01 mmH2O. Voltage: 12 V. Product colour: Black