Noctua A-Series NF-A4x10 Blades with AAO Frame, SSO2 Bearing Premium Fan

Noctua A-Series NF-A4x10 40mm Blades with AAO Frame, SSO2 Bearing Premium Fan Brand: Noctua Series: A-Series Fan Size: 40mm Type: Case Fan Bearing Type: SSO2 RPM: Rotational Speed (+/- 10%): 4500 RPM Rotational Speed with L.N.A. (+/- 10%): 3700 RPM Air Flow: Airflow: 4.83 CFM Airflow with L.N.A.: 3.88 CFM