The various pathogens present in the air become dangerous indoors because, at the air exchange rates typical of residential buildings and offices, they remain in the room for hours. The air renewal rate takes a long time, so any increase in the supply of fresh air is essential. The Virigs VIRUS TRAP filter combines two main features for air purification: the very high air flow rate for rapid and complete filtration every minute and the extreme efficiency of medical grade HEPA H-14 filters.