GREATER EFFICIENCY - LESS NOISE AT HIGHER AIRFLOW: At low fan speed, the motor noise is key, a motor developed in Germany with a new alloy, lubricant combination reduced friction and noise INNOVATIVE DESIGN: Design of fan blades improves air flow and facilitates efficient ventilation, impeller was designed with a focus on minimzing the noise level yet delivering the desired airflow and pressure TWO WAY INSTALLATION: Blow warm air out of the case, draw cool air into your case LONG SERVICE LIFE: The Fluid Dynamic Bearing comes with an oil capsule that avoids lubricant leakage, thus this bearing is as quiet as a sleeve bearing but comes with a higher service life TECHNICAL DATA: Fan speed: 1200 RPM, Airflow: 15 1 CFM; 25 7 m/h (at 1200 RPM), Noise Level: 0 08 Sone (at 1200 RPM), Pin: 3-pin