For bathrooms up to 45-sq. ft., can be wired separately or in combination. Features 2.5 Sones, 11-1/8 x 10-5/8 inch white polymeric grille & shatter resistant lens, lifetime lubricated plug-in motor, 100W bulb capacity, (bulb not included), installs in 4-inch round duct, housing size: 5-3/4H x 8-1/4W x 8D inches.