DC brushless fan, dc fan Size (mm) Model NoVoltage (V)Speed (RPM)Bearing FS:Sleeve FB:one ball F2B:two ballCurrent (Amp)Watts (W)Air Flow (CFM)Static Pressure (mm/H2O)Noise (dBA)25×25×10FS25102L128000FS0.060.721.51.2620FS25102M10000FS0.080.962.32.724FS25102H12000FS0.11.234.430FB25102L8000FB0.050.61.51.2620FB25102M10000FB0.070.842.32.724FB25102H12000FB0.091.0834.430F2B25102L8000F2B0.050.61.51.2620F2B25102M10000F2B0.070.842.32.724F2B25102H12000F2B0.091.0834.430