As the term indicates "air scrubbers" clean very dirty air in spaces that have either become compromised quickly from a mishap or where processes are taking place that create heavy indoor pollution (like smoke). The Airwash Multipro Air Scrubber is easy to use and customize for particular conditions. Amaircare, made in Canada, has been supplying industrial air cleaners for over two decades. The price includes the Perfect Seal HEPA cartridge, Media Pad Pre-filter and Pleated MERV 8 pre-filter. Additional filters are available.