Secure Air SA3510 UVGI Whole House Air Sterilizer Secure Air UVGI (Ultraviolet Germicidal Irradiation) System renders 99.9% of Air-borne germs, viruses, bacteria, molds, fungi and spores harmless in your home or office. Multi Purification/Filtration System: UVGI,Reusable Dual Electrostatic Filtration Carbon Filtration, HEPA Filtration and Scent Filters Axial Computer Fan : Capable of cleaning over 40,000 cubic feet/day based upon constant use, Three speed settings,Two individual program modes Ozone Free Operation Durable, easy-to-clean construction comprised of Polished Stainless Steel, Brushed Aluminum and advanced polymers