Silverstone Tek Air Penetrator Air Channeling Case Fan with 120x120x25mm/1200rpm and Sleeve Bearing Cooling AP122 (Black) Industry leading air channeling fan Standard 120mm frame for maximum compatibility with CPU coolers Integrated air channeling grille double as fan guard to reduce overall size Low power consumption Higher airflow and less noise with 9-bladed design Noise level at 19.7 dba Airflow at 42.58 cfm