4028 40x40x28MM 40MM Cooling Fan DC 12V 0.28A High Speed Cooler Server Fan Big Power Dual Ball Bearing Axial Fans with 4pin PWM

4028 Quiet/Low Noise high speed Fan 12V, 4-pin PWM, Max 10300 RPM, Max 30 dB(A), > 50000H MTTF.
Micro Industrial fan Information, Size 40*40*28mm; Fan Blade 5PCS; Voltage DC 12V; Operating Voltage 7-13.8V; Current 0.28A; Power 3.36W; Air Volume 13.4CFM; Wind Flow 0.38m³/min; Wind pressure 143pa;Interface 4-wire.
The double ball bearings are corrosion-resistant and resistant to high and low temperatures, making the fan operation more stable.
The maximum speed of the 4-pin PWM variant, which uses 4-pin PWM fan headers for automatic speed control, is 10300 rpm.
Ideal size for 40x28mm fans to be replaced in network and storage equipment (routers, switches, NAS, etc.) or other devices like DVRs, or for servers.

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