Panasonic WhisperGreen® Select™ Multi-Speed Bathroom Fan, 110 sq-ft Room Size, 50/80/110 cfm, 0.3 Sones, 4 or 6 in Dia Duct, 120 VAC, 60 Hz, 0.04 A, 0.06 A, 0.1 A, 3.1 W, 5.1 W, 9.9 W, 13 in L x 13 in W Grille, 10-1/4 in L x 10-1/4 in W x 7-3/8 in H Housing, Zinc Aluminum Magnesium Housing, Polypropylene Grille, Ceiling Mount, White