NuTone 50NT Energy Star Qualified Bath Ventilation Fan with White Grille Energy Star Qualified for efficient operation and lower utility bills Ideal for small bathrooms up to 45 square feet 1.5 Sones for very quiet operation at an affordable price ENERGY STAR Qualified for efficient operation and lower utility bills Fits in 2-inch by 6-inch ceiling construction so that it works in nearly all applications UL Listed for use over bathtubs or showers when connected to a GFCI protected branch circuit