Introducing the Green Builder GBR100, from the Delta Breez Green Builder Series. This powerful ventilation fan is designed with a brushless DC motor, ensuring quiet operation at just 1.4 Sones. With a 100 CFM capacity and a 4-inch duct, it's perfect for bathroom spaces up to 95 sq. ft. But there's more to it than just its impressive performance. The GBR100 boasts exceptional energy efficiency, consuming no more than 12.6 Watts while delivering an efficiency rating of 7.9 CFM/Watt. Its lightweight design makes installation a breeze, and its sound and flow ratings surpass building requirements. Upgrade your bathroom with the Green Builder GBR100 and enjoy superior ventilation in a quiet and efficient package.