Rosewill RFA-80-K 80mm Case Fan Operating at 2500 RPM, the Rosewill RFA-80-K delivers strong airflow of up to 33.21 CFM for impressive levels of heat dissipation As a high efficiency and silent system thermal solution, the Rosewill RFA-80-K works at a whisper-quiet 22.41dBA at 2500 RPM Dimensions: 80 x 80 x 25mm