Broan 70 Cfm Through-Wall Ventilation Fan Say Goodbye To Unbearable Heat And Humidity In The Garage, Unwanted Smells In The Kitchen And Odors In The Laundry Room, Rec Room Or Garage. The Broan 70 Cfm Through-Wall Ventilation Fan Is The Perfect Solution For Rooms Up To 65 Sq. Ft, Including A One Car Garage, Or Use For Spot Ventilation Near Areas Such As A Work Bench, Garbage Can, Car, Or Lawn Mower. The Durable Galvanized Steel Housing Provides Superior Protection Against The Elements And Wear And Tear. It Features A Built-In Exterior Wall Cap/Vent With Bird Screen, Which Reduces Install Time, No Duct Work Needed. Customize Your Fan With One Of Broan-Nutone S Wall Controls. For Automatic Operation, Choose From A Humidity Or Motion Sensing Control. To Automatically Turn Off The Fan After You Leave The Room Or Garage, Pair The Fan With A Delay-Off Or Countdown Timer. (Wall Controls Sold Separately)