In 1969, Metal-Fab began producing Micro Air® clean air systems for commercial and industrial applications. Commercial units are used in offices, data processing areas, restaurants and retail stores to capture and remove ......In 1969, Metal-Fab began producing Micro Air® clean air systems for commercial and industrial applications. Commercial units are used in offices, data processing areas, restaurants and retail stores to capture and remove smoke, paper dust, toner and even bacteria. Industrial air cleaners and dust cells are used to capture and remove common indoor pollutants as well as welding smoke, grinding dust, odors and oil mist found in many industrial applications. Micro Air® exhauster arms are used for removing various pollutants at their source.