Noctua NF-B9 Bevelled Blade Tips SSO Bearing Fan with VCN - Retail Fan Size : 92 x 92 x 25mm, Rotational Speed (+/- 10%):1600 RPM Airflow:64,3 m/h , Acoustical Noise:17,6 dB(A) Scope of Delivery: Fan, 4 Fan screws , Warranty : 6 Years.