Rabbit Air MinusA2 Artists Series SPA-700A [Water Lilies, Germ Defense] Advanced HEPA filtration with six stages of purification and deodorization Germ Defense customized filter: Effectively traps and reduces airborne bacteria, mold spores and particles that carry viruses. The MinusA2 is designed to either stand alone or to be mounted on the wall. Room coverage up to 700 sq. ft. 5 Year Warranty (Parts and Labor) and 24/7 Technical Support Traps allergen and particles 0.3 microns in size at 99.97% efficiency Traps allergen and particles 0.3 microns in size at 99.97% efficiency Reduces buildup of common allergens including dust mites, mold, pollen and pet dander* trapped on the filter Reduces the growth of bacteria and viruses on the filter** Prolongs optimal filter efficiency