This ceiling mount bathroom exhaust fan clears steam and odors from enclosed rooms of 50 to 120 square feet, with a Pick-a-Flow switch that selects 50, 80, or 110 Cfm to match the space. A pure copper motor runs quietly at 0.3 to 1.5 sones and draws just 11 watts, while a built-in check valve blocks backdraft. The galvanized housing and thickened Abs grille mount to a joist or wall through a 4 inch duct, and Energy Star and Hvi certification confirm efficient ventilation.