Panasonic FV-10NLF1 WhisperLine 120 CFM In-Line Fan, 4-Inch Duct Can place inlets over the shower, tub, toilet and/or vanity in a single bathroom and still use just one fan Blower wheel is designed to draw air in both sides allowing more area for air to enter the wheel Can be installed in five different positions and joist, truss and suspension brackets are included Retains pollutants that can be hazardous to its occupants Rated 120 cubic feet per minute