Electrolux Z7400 Air Purifier. True HEPA filtration.  Quality construction built to last year's. Runs at a whisper quiet 31 db(a). Has 3 speeds and 2 auto function speeds. Only uses 1 amp of electricity. Intake filters ( shown on side view) are washable and do not need replacing. They catch the bulk of hair, pet dander, and dust before entering the motor system. HEPA cartridge is a giant 3 inches thick by 7 inches wide and 16 inches long for max filtration. Carbon filter catches odors from the room. Unit is 19x10x19" for floor position. This unit is designed for a 700 square foot room. Regular price for this unit was $679.99.  It was our display model only. Carbon filter is factory sealed.