Germicidal Air Purifier • Ideal for the largest rooms. • 1300 Sq. Inch collection Area. • Slide out array has nine driver blades that channel pollutants toward 10 collector blades with 1,300 square inches of highly charged surface. • 1,600 Sq. Inch OzoneGuard with PremAir catalyst from BASF Catalysts LLC., converts by-product ozone to oxygen. • Four super quiet 120mm fans with brushless magnetic motors are virtually silent. • Aerodynamic designs for the fans and collection array minimize noise. • Hybrid GP's Clean Air Delivery Rate (CADR)/watt is the world's best. • CADR measures the volume and speed of air cleaned in cubic feet/minute (cfm). • Hybrid GP on "high" is (12W). • Energy Star CADR/watt is 15.23. • Destroys germ, no UV bulb. • Low cost operation - Total annual cost is about $10.00 for 24/7 operation. • Energy use range from 5 watts to 18 watts. • There are no filters or UV bulbs to replace. • Sharper Image Hybrid GP is the world's best, most efficient high-capacity air cleaner • Air purifier helps with allergies, bacteria, odors, dust and dirt • Purifier has no filters or UV bulb to replace • Four quiet air cleaning speeds • Kills essentially all bacteria • Energy Star Rated • Features OzoneGuard and Germicidal Protection Electrostatic precipitator (ESP) air cleaner features a 19-blade, 1,300-sq.-inch collection array. Its outstanding capability is due to its having the strongest electric field of any ESP air cleaner ever made. Dimensions Depth 10 in. Height 30 in. Width 11 in. Weight 18 lb.