Delta BreezIntegrity ITG50LED has been awarded ENERGY STAR Most Efficient 2018 with brushless DC motor engineered to run continuously for a minimum 70,000 hours. Airflow rating of 50 CFM and loudness rating of 0.7 Sones at 0.1 static pressure as certified by the Home Ventilating Institute (HVI); power consumption of 5.0 Watts with efficiency rating of 11.0 CFM/Watt at 0.1" static pressure; motor lock protection and self-compensating motor speed for intended airow when static pressure is encountered. UL and cUL listed for tub/shower enclosure when used with GFCI-protected branch circuit wiring.• ENERGY STAR qualified with brushless DC motor technology• Quiet operation at 0.7 Sones• Ceiling mount ventilating fan/Dimmable LED Light rated for continuous running• 13-watt LED light included (equivalent to a 60-watt incandescent bulb)• Dimmable LED light (dimmable switch not included)Energy efficiency at 11.0 CFM/Watt• LED life is 30,000 hours (compare with 10,000 hours CFL life)• Self-compensating motor speed for intended airflow when static pressure is encountered