Set it and forget it. The Delta Breez SIG110HL is a powerful yet super quiet bathroom exhaust fan/light equipped with an adjustable humidity sensor and adjustable continuous low speed control for the ultimate in convenience and worry-free operation. Air flow of 110 CFM and loudness rating of 0.4 sones. Features a DC brushless fan motor for extended reliability. Power consumption of 12.7 Watts with an efficiency rating of 8.8 CFM per Watt. ENERGY STAR qualified and HVI certified. Light bulbs are included.