XPOWER AP-Series HEPA Air Filtration SystemXPOWER is proud to introduce The Brushless DC Motor Line Of Upright AP Large Volume HEPA Air Filtration Systems with PM2. 5 Sensors. This new series of air scrubbers provide all the power needed for improving indoor air quality on large jobs, while being able to precisely control the speed to its lowest level for all day ultra quiet operation in settings like classrooms, business, and in occupied facilities where noise level is important. All of this