Fan allowing to reduce humidity in a bathroom up to 85 square feet. A retrofit installation can be done entirely in the room. No attic access required. EzDuctTM connector. Damper with TrueSealTM technology. Reduces 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 backdrafts. UL listed for use over a tub or a shower with a GFCI circuit connection. Includes foldable mounting ears, a new damper and housing technology that improves building airtightness. With light that requires 100 W max. incandescent A19 type bulb or energy efficient equivalent bulb with Maximum Overall Length (M.O.L.) of 4.4" or less (bulb not included).