40mm 4020 DC 5V Silent Air Purifier Blower Fan 40x40x20mm1. frame size(mm): 40x40x20MM2. bearing system type: Sleeve bearing,Ball bearing3. rated voltage: 5V,12V,24V4. rated speed: 4200-6000RPM5. maxiam air flow: 2.97-4.3CFM6. maxiam pressure: 4.95-8.65mmH2O7. maxiam noise:25.4-33.8dBA8. function: by impedance,by IC, by IC with FG40x40x20MMModelBearingRated VoltageStartup VoltageCurrentPowerSpeedAir FlowStatic PressureNoisePart NO.FunctionSystemVDCVDCAWRPMM3/minCFMmmH2OINH2OdBAFQFB4020H05SSleeve540.201.0060000.124.308.650.3433.8FQFB4020M05S40.150.7553000.103.606.870.2728.7FQFB4020L05S40.100.5042000.082.974.950.1925.4FQFB4020H05BBall40.201.0060000.124.308.650.3433.8FQFB4020M05B40.150.7553000.103.606.870.2728.7FQFB4020L05B40.100.5042000.082.974.950.1925.4FQFB4020H12SSleeve1290.131.5660000.124.308.650.3433.8FQFB4020M12S90.101.2053000.103.606.870.2728.7FQFB4020L12S90.080.9642000.082.974.950.1925.4FQFB4020H12BBall90.131.5660000.124.308.650.3433.8FQFB4020M12B90.101.2053000.103.606.870.2728.7FQFB4020L12B90.080.9642000.082.974.950.1925.4FQFB4020H24SSleeve24120.122.8860000.124.308.650.3433.8FQFB4020M24S120.081.9253000.103.606.870.2728.7FQFB4020L24S120.051.2042000.082.974.950.1925.4FQFB4020H24BBall120.102.4060000.124.308.650.3433.8FQFB4020M24B120.081.9253000.103.606.870.2728.7FQFB4020L24B120.061.4442000.082.974.950.1925.4