Nine airflow-optimized fan blades that reduce noise-generating turbulence while increasing airflow. Air flow - 61.2 CFM. Noise level - 18.8 decibels
Even at maximum speed, The 140mm size operates at only 18.8 dBA)
A long-life Rifle Bearing that contributes to an operating lifetime of 80, 000 hours (> 9 years)
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