The FlexVac converts any IQAir air purifier into a mobile, self-contained extraction system. With the FlexVac, the air purifier can remove and capture infectious bacteria, viruses, gases, fumes, vapors, odors, and ultrafine particles directly at the source. It also comes complete with mobility casters and a semi-rigid, self-supporting duct 5 inches in diameter and 4 feet long with a vertical reach of over 6 feet. Air purifier must be purchased separately.