This patent pending series marks a revolution of our mid range ventilation fans. It gives professionals the flexibility to handle new construction or room side retrofit installations from one hard working product line with a full range of operating points. Innovations include foldable mounting ears and new damper and housing technology that improve building air tightness like never before. And all with new grille designs that are at home in any decor. 110 cfm reduces humidity to quickly eliminate fogged mirrors and manage moisture in bathrooms up to 105 square feet, so your vision will always be clear and your surroundings will always be comfortable. Retrofit installations can be done entirely from the room side no attic access required. This means a faster, easier installation, so you can move on to something else. With our true seal damper technology, invent fans reduce air leakage by up to 50% compared to competitive models, resulting in better home performance Via blower door tests and reducing cold and warm air back drafts. Ezduct connector can be installed room side with no attic access required, fan housing connection have never been easier. Ul listed for use over tubs and showers with a GFCI circuit so you can capture the steam before it spreads throughout the room by locating your fan exactly where you need it the most. 100W Max. Incandescent A19 type bulb or energy efficient equivalent bulb with maximum overall length m.O.L. of 4.4 Inch or less bulb not included . testing reflects TOTAL fan housing air tightness. See nut one.Com/invent for more details.