... airflow.4.Certification:UL,CCC. 1.North America fashional design,simple and elegant appearance,an integration of ventilating and energy-saving lighting ... design,achieve to free maintenance,long life and high efficiency energy saving.4.High performance volute and centrifugal impeller by adopting the ... for 45-135Sq.Ft.6.Certification:UL, cUL, HVI, ENERGY STAR , CCC Air cooling fan with light BPT14-13AL