AERAMAX PRO AM3 PC AIR PURIFIER with PureviewThe AeraMax PRO AM 3 w PureView can be mounted on a wall or located on a stand. It is perfect for most rooms, providing up to 3 air changes every hour in rooms as large as 550 square feet. It is ideal for offices, conference rooms, classrooms, restrooms, waiting rooms, and enclosed shared spaces. Five year manufacturer's warranty. PureView: The PureView feature has a display screen and uses two high grade laser particle counters to monitor air quality