Sunon 40 x 40 x 20mm (1.57 x 1.57 x 0.79 inch) DC 12V Fan (2-Wire) Sunon KDE1204PKBX-8 Ball Bearing Fan Dimensions: 40X40X20 MM Voltage: DC 12V, 1.1W, Speed: 7800 RPM, Air Flow: 10.8 CFM, Noise: 29.4 dBA Termination: 2-Pin / 2-Wire / 18-Inch