... light BPT18-19AL 1).50CFM to 110CFM. 2).Longlife ball bearing motor. 3).Quiet and excellent airflow Ceiling exhaust fan ... .2).Longlife ball bearing motor.3).Quiet and excellent airflow.4).Certification:UL,CCC. 1.North America classical double layer grill ... coating,resistance to rusting and corrosion.3.High quality ball bearing motor,apply low power consumption,low temperature-rising,environmental, ...