120mm fan case fan rotations per minute 1 600 rpm max noise emission 2889 db volume flow 65 mh airflow 3826 cfm dimensions wxhxd 120 x 120 x 12 mm width 120 mm height 120 mm depth 12 mm fan bearing sleeve bearing series scythe slip stream mtbf 30 000 hours port 3 pin weight 98 g