DC motor powered axial fan series covers a diameter range of models from 20mm to 200mm. with maximum air volume up to 700 m3/h and maximum static pressure up to 500 Pa. Input power sources for DC series are 12VDC 24VDC 48VDC; DC motors make excellent performance of this product Low noise L oW vibration Energy saving Enviromental performance quietness. The product series is RoHS compliant and is also certified according to many quality management accreditation systems and has gained various accreditations such as UL TUV and VDE. Every model undergoes rigorous testing to achieve minimum noise under high airflow and air pressure conditions. All models are meet strict reliability requirements. Model:DC4020