Panasonic asfn8 series axial dc brushless fans 80 x 80 x 25mm panasonic asfn86391 this 12v dc axial brushless fan from the panasonic asfn8 series measures 80 x 80 x 25mm and has an operating speed of 3250rpm this model includes a sensor which prevents the fan from working when blocked panasonic asfn86391 axial 12v dc brushless fan 3250 rpm 80 x 80 x 25mm sensor