The QTXEN line represents the ultimate in bath fan solutions for today"s homes. Whether you select a fan or a fan/light version, the QTXEN line brings simple elegance to any bath or powder room. Whether by sight or by sound, you"ll barely notice the QTXEN line. Except, of course, when you need just the right amount of ventilation and light at the touch of a switch.Nearly silent operation <0.3 Sones 6" ducting for superior performance. Designed to meet Energy Star standards Motor Engineered for continuous operation UL listed for use over tub/shower with GFCI circuit 10-1/2" x 11-3/8" x 7-5/8" housing fits 2" x 8" construction Grille Dimension: Fan - 12-7/8" x 13-5/8"