80mm fan case fan blade geometry a series with flow acceleration channels frame technology aao advanced acoustic optimisation static pressure 1 96 mm h2o included low noise adaptor lna ultra low noise adaptor ulna 34 pin adaptor 30cm extension cable 4 vibration compensators 4 fan screws warranty 6 years rotations per minute 2 200 rpm max noise emission 177 db volume flow 555 mh airflow 327 cfm statischer druck 237 dimensions wxhxd 80