The Envirco IsoClean® filtration system is designed to easily and economically create a negative pressure isolation room/environment that meets OSHA and CDC TB guidelines as the world navigates COVID-19 pandemic. Can be used as a positive pressure clean air recirculating system in clinics, waiting rooms, hospital emergency rooms and other confined areas. The system can also be used as a partial or complete exhausting unit to construct a negative pressure isolation room space.