The Delta BreezSmart SMT150 marks a new achievement in ventilation for green construction with powerful performance at very low noise and low power consumption. Air flow of 150 CFM with loudness rating at less than 0.3 sones. Power consumption of 16.9 Watts with energy efficiency rating of 8.8 CFM per Watt. Features a DC brushless fan motor for extended reliability. ENERGY STAR qualified and HVI certified.