Features sleeve/ball bearing , the fan can be work very quiet and silent, you may hard to hear the noise of it , but it also offer you 47 CFM airflow . The fan can work smoothly for 50,000 hrs at 25 ℃.
Metal blades, metal frame cross flow fan with AC motor, enhances the heating efficiency. The fan can withstand harsh weather, extreme environments, as well as dust and moisture.
