FV-0511VKS2 Panasonic WhisperGreen Select Fan CFM Multi-Speed Reintroducing WhisperGreen® Select™, our whole house IAQ solution with enhancements that will provide greater value to our customers. First, our improved single-hinged Flex-Z Fast™ bracket for more flexible and easy installation. Other enhancements include a new elegant grille design, an environmentally friendly 26 gauge Zinc-Aluminum-Magnesium (ZAM) housing design and dual access junction box that helps simplify wiring in tight spaces.Customizable, all-in-one whole house precision ventilation solution ideal for use in the bathroom, laundry room, sun room, basement or garagePick-A-Flow Airflow Selector; features a built-in speed selector (50-80-110 CFM model) combined with SmartFlow™ technology simplifies the selection process and ensures optimum performance to meet code and reduce callbacksNew! Environmentally friendly 26 gauge Zinc-Aluminum-Magnesium (ZAM) housing designNew! Improved Flex-Z Fast™; single-hinge bracket with added flexibility, fast and easyNew! Elegant grille design complements the aesthetics of any room Specifications:Advanced Features : Pick-A-Flow™ Airflow Selector, ECM motor with SmartFlow technology, Multi-Speed with Time DelayPower Consumption (Watts) : 30 CFM=2.4, 40=2.7, 50=3.1, 60=3.7, 70=4.3, 80=5.1, 90=6.5, 100=7.9, 110=9.9Energy Efficiency (CFM/Watt) : 30 CFM=12.6, 40=14.8, 50=16.2, 60=16.3, 70=16.7, 80=15.7, 90=13.9, 100=12.7, 110=11.1Power Rating (V/Hz) : 120/60Motor Type (AC/DC) : DC (ECM)ENERGY STAR® Certified : Yes