Akasa ak f1825sm cb 18cm blue led case fan akasa ak f1825sm cb p this 18cm blue led case fan from akasa has been designed with a huge diameter of 180mm and therefore allows the ultimate airflow in your pc housing thus providing your hardware components with plenty of fresh air p p equipped with 5 blue led s and a fan speed of 600rpm while the noise generation is just 18 dba p akasa ak f1825sm cb 18cm blue led case fan