Descriptions:
It used for used for Raspberry Pi 4,Pi 3, Pi 2, Pi Model B+.
The DC 5V cooling fan run smoothly and quietly and it's good for heat dissipation of Raspberry Pi. It can be assembled easily by screws.

Features

Speed（At 25℃,To record speed after fan running normal, This time about 3~5minutes): 4500+/-10% RPM
Air flow(At zero static pressure): 4.8 CFM
Air Pressure(At zero air flow): 2.66 mmH2O
Acoustical Noise(AVG.): 22.63 dB(A)
Insulation Type: CLASS A (105°)

Package Includes:
2x Cooling Fan
2x Screw Set