Filtration system primarily comprised of air cleaning units, containing an air filter and ultraviolet lights for use in construction, remodeling, and servicing in healthcare facilities, used to prevent dust and dirt from being allowed into patients' space, to help provide infection control, and also used in clean rooms, food safety, manufacturing, asbestos abatement or other filtering applications; Hepa-filtered negative air machines for removing contaminated air from a sealed containment are...