ARCTIC F9 Silent Extra Quiet 92 mm Case Fan. Type: Fan, Fan diameter: 9.2 cm, Number of speeds: 1, Rotational speed (max): 1000 RPM, Noise level (high speed): 20 dB, Noise level: 0.08 sone, Maximum airflow: 21.2 cfm, Airflow: 36 m³/h, Maximum air pressure: 0.4 mmH2O, Bearing type: Fluid Dynamic Bearing (FDB). Voltage: 12 V. Width: 92 mm, Depth: 92 mm, Height: 25 mm. Product colour: Black