Responding to consumer demand, Panasonic Home & Environment Co. has expanded its third generation of WhisperGreen ventilation fans to include two new 110-cfm models (FV-11VK3 and FV-11VKL3). Several proprietary WhisperGreen features apply to the 110-cfm models, including SmartFlow Optimum CFM Technology that detects and compensates for additional static pressure by increasing the airflow to achieve the specified cfm output, and Panasonic’s energy efficient DC motor. The new models also include a dual adaptor for 4-in. or 6-in. ducts, making them an ideal option for renovation projects as well as new construction.