140mm fan case fan rotations per minute 1 200 rpm max noise emission 192 db volume flow 1198 mh airflow 7051 cfm dimensions wxhxd 140 x 140 x 25 mm width 140 mm height 140 mm depth 25 mm fan bearing hydro dynamic bearing series cougar vortex mtbf 300 000 hours ports 3 pin 4 pin