PB110 remote inline bath fan removes moisture from the air with virtually no noise. With a small footprint on the bathroom ceiling, the white unobtrusive exhaust grille easily fits any bathroom design. To find a perfect match, use the Bathroom Fan Selector. Features Airflow 100 CFM at 0.20 inch Wg Smallest footprint on ceiling 7 inch white round plastic grille 115 cfm remote mount 4 inch duct fan Backdraft damper included ENERGY STAR listed UL listed for wet locations The fan motor is located away from the bathroom which enables virtually silent operation. The ceiling exhaust grille is tied to the fan motor via an insulated flexible duct. The grille can be located over the toilet, the shower or above any other source of moisture or odor. PB110 fan consists of a 4 inch duct fan, one ceiling vent grille and grille housing with a backdraft damper. The grille and fan use a 4 inch duct. The fan is designed for intermittent or continuous operation to meet ASHRAE Standard 62.2. UL listed for wet locations. Configurations with LED lights are available.