LG Duct UVnano Filter Box can effectively create a safe indoor environment by trapping and removing various harmful substances such LG Duct UVnano Filter Box can effectively create a safe indoor environment by trapping and removing various harmful substances such as fine dust, bacteria and viruses in the form of dropletsas fine dust, bacteria and viruses in the form of droplets. For more information : https://www.lg.com/in/business/air-solution/single-split-air-solution/single-split-concealed-duct/