The NIKRO #AP0850 is a powerful air cleaning system designed to capture welding fumes, smoke, oil mists, and light particulate matter at the source ... protecting worker's breathing zone from dangerous contaminants. NIKRO portable air cleaners reduce maintenance costs, keeping shops cleaner and safer. They provide greater worker visibility and prevent accidents by removing oil mists and dust before they reach floors and equipment in the work place. These air cleaners save money by filtering and returning heating and cooling air back into the shop. No outside ventilating is needed and no additional duct work is required. Mounted on caster, these units are extremely portable and can be easily maneuvered to serve several different work stations. This means you always have an air purifying ventilation system where you need it. So, if you are looking for economical solutions to maintaining a safe, clean shop, protecting workers, reducing your heating and cooling costs, and complying with O.S.H.A. and E.P.A. standards ... NIKRO has the solution for you!