4cm Black Fan 40 x 20mm, lo-noise, 12v, 3-pin, sleeve bearing, medium speed. Product Code: AK-4020MS 40 X 40 X 20mm sleeve bearing fan with 3-pin connector. • Lo-noise, long life black fan • Retail Pack, also OEM pack available Application PC case or heatsink fan Dimension 40 x 40 x 20mm Fan speed 5000 RPM Airflow 5.70 CFM (9.7 m3/h) Fan air pressure 2.9mm H20 Noise level 23.46 dB(A) Voltage rating 12V DC Bearing type Sleeve Connector 3pin OEM Product code DFS402012M Retail Product code AK-4020MS