80mm 12V Brushless DC Cooling Fan 80x80x25.4mm High Speed Sleeve Bearing Dynatron (Top Motor) DF1208SH or DF128025SH 80-mm ( 8-cm ) System Fan FN-8025-4P-SH-DY Size: 80x80x25.4mm Bearing System: Sleeve Bearing Rated Voltage: 12V Input Current: 0.25A Input Power: 3.00W Speed: 2900 +/- 10% RPM Air Flow: 31.96 CFM Static Pressure: 3.16 mm-H2O Noise Level: 34.14 dBA click here for Dynatron / Top-Motor Item Numbers Comparison Chart