120mm fan case fan rotations per minute 2 200 rpm max noise emission 335 db volume flow 131 mh airflow 77 cfm dimensions wxhxd 120 x 120 x 25 mm width 120 mm height 120 mm depth 25 mm fan bearing double ball bearing operating power input 216 watt mtbf 50 000 hours port 4 pin leaf colour grey frame colour black