The Energy Star-qualified WhisperGreen-Lite exhaust fan features a motion sensor, variable-speed controls, and a timer that makes possible both intermittent and continuous ventilation. If necessary, the speed automatically increases to ensure that the fan operates at a constant 80 cfm. A built-in damper prevents backdraft. The flush-mount grille incorporates a 32-watt CFL fixture and a 4-watt nightlight. 866.292.7292. www.panasonic.com/ventfans.