Panasonic WhisperSense™ Ventilation Fan, 110 cfm, 4 and 6 in Duct Dia, 120 VAC, 0.22 A, 60 Hz, 24.3 W, 0.3 Sones, 13 in Grille Length, 13 in Grille Width, Polypropylene Grille, 10-1/4 in Housing Length, 10-1/4 in Housing Width, 7-2/5 in Housing Height, Galvanized Steel Housing, Ceiling Mount, Humidity Sensing: No, Motion Sensing: No, Import