Collects dust, smoke and other airborne pollutants in factories, schools, shops, labs, assembly areas and repair shops with a high a high efficiency, 2-stage filtration system. A complete, packaged air filter unit designed as a “free hanging” system for efficient and economical air cleaning when at-the-source capture of pollutants is not possible or practical. Strategic placement of one or several units in an area will result in dramatic reduction of the bothersome smoke, dust or haze in your facility. The first stage of filtration is a 40% pleated pre-filter that will trap dust and larger particles. The second stage is a micro-glass multi-pocket bag filter that will remove smoke and other sub-micron size particles from the air.