The Dynamic M-25 Self Contained Commercial Air Cleaner includes a quiet single speed blower section and a V bank rack of Dynamic air cleaners. It is typically hung from the ceiling a by chain in a production area. There is an optional G-21-TW sterile sweep UV unit available for this unit. Maintenance on this unit consists of replacing the carbon filters several times per year and replacing the UV lamp every 12 months. This unit was also known as an Air King unit.