Rigid Brass Housing with Fluid Dynamic Bearing to reduce noise levels and assure silent operation With a speed range of 800 to 2000 RPM, you'll get an adequate performance 29 CFM airflow Anti-vibration pads are built into the outside corners of the fans to absorb and remove vibrations with two-plane balance to maintain stability in your fan Utilizing our Auto START/STOP Function reduce power consumption and decrease heat Equipped with 4-Pin PWM Connector with 0 – 26 dBA