Oreck XL Professional Air Purifier Air8SB Ionizer. Electronically Captures & Destroys Bacteria, Mold, Virus and Fungi. Stop breathing unhealthy amounts of polluted air. The Oreck Air8SB regenerates the air in a 30' x 30' room every hour. It's the same system used in the U.S. Submarine Fleet, using electronic precipitation with 5-stage filtration. Plus, it's as economical to run continuously as an ordinary light bulb. Ultra-quiet, too! Powerful air-moving fan teams up with a permanent filter system to clean the air of microscopic allergens, dust and dirt; Completely purifies the air in a 900 sq. ft. room every hour; Permanent "no-replacement" filter swishes clean in minutes with detergent and water (simply rinse and re-insert); Works on floor or tabletop; 16" x 10½" x 5¼"h., 10.5 lbs. Used, but in great condition