San Ace 40 9CRJ Type Counter Rotating Fan delivers a maximum static pressure of 2400Pa and a maximum airflow of 37.4CFM. This fan increases the maximum static pressure has by 1.4 times and the maximum airflow by 1.1 times compared with the San Ace 40 9CRH. The 9CRJ fan efficiently cools high-density equipment that is hard to ventilate, contributing to system downsizing. It measures 40mm x 40mm x 56mm and saves energy by using a PWM control function to control the fan speed. San Ace 40 9CRJ Type Counter Rotating Fan is suitable for cooling 1U servers, switching power supplies, and communications equipment.