Panasonic has unveiled its EcoVent ENERGY STAR-rated ventilation fan. It incorporates Veri-Boost, which provides a 20-CFM boost to ensure the designed airflow is achieved to help meet requirements of many green-building programs. The 70-CFM fan operates at 1.1 sones at 0.1 water gauge. It has a footprint 46.6 percent smaller than comparable fans. The vent includes a 4-inch duct adaptor and low-profile housing that fits in 2- by 6-inch construction. The product can be combined with the company’s WhisperGreen ventilation fans.