140mm Rotational Speed (+/- 10%): 1200 RPM Rotational Speed with L.N.A. (+/- 10%): 900 RPM Rotational Speed with U.L.N.A. (+/- 10%): 750 RPM Airflow: 64.96 CFM Airflow with L.N.A.: 49.29 CFM Airflow with U.L.N.A.: 41.93 CFM SSO Acoustical Noise: 19.6 dBA Acoustical Noise with L.N.A.: 13.2 dBA Acoustical Noise with U.L.N.A.: 10.1 dBA