Sanyo Denki San Ace 40 9HVA Type High Static Pressure DC Fans measure 40mm x 40mm x 28mm and feature very high static pressure (9.24″ H2O) with a maximum airflow of 37.1CFM. The energy-saving San Ace 40 9HVA fans also provide a 20% reduction in power consumption compared to previous models. The small size provides enhanced design flexibility and high cooling performance. A PWM control function is standard to control the fan speed. These fans are ideal for cooling 1U servers, switching power supplies, and communications equipment.