Medium spaces with moderate occupancy can have clean air with a suitable sized air purifier that can simply be plugged into an electrical socket. AB850 removes 99.90% pollutants from the air, has a coverage area of 850 sqft and a CADR of 780 m3/hour. It comes with 3 layers of filters - pre-filter, HEPA and activated carbon. The purifier has a 1 year warranty and the filters can be replaced in due time to ensure that the devices are running effectively.