Silent Case Fan:8 rubber pads which can make your rig more quietly (25.5dBA) when the fans work with high performance.%ocs%Easy To Install: Entry-level installation and operation, only 3 steps.%ocs%Superior Airflow And Pressure : The square design of the fan frame providing highly efficient ventilation.(1000 RPM)%ocs%High Quality Fan Blade :Designed with 9 blades to provide high airflow (37.5CFM), good cooling capacity.%ocs%Technical Data: Fan Speed: 1000 RPM , Airflow: 37.5CFM , Air pressure: 0.71 mmH2O