Sunon super silence brushless dc axial fans sunon ha50151v4 0000 999 brushless axial dc fan 50 x 50 x 15mm from the sunon super silence fan series this fan uses mini motor technology to maximise the space between the fan blades and the airflow passage so can run at a low speed without losing cooling efficiency ideal for use in medical equipment household electrical appliances kitchen facilities and other business equipment sunon ha50151v4 0000 999 brushless 12v dc axial fan 50 x 50