ALS air shower lets staff enter/leave contamination controlled areas where pollution, contamination or dust products are handled for decontamination. Generally the unit is installed at the clean room entrance. Once in the shower, the user receives approx. 25m/sec blast of high speed Class ISO5 air designed to remove any active or inert particles from the users clothing with venting of contaminated air going through the grid, which then pass over pre-filteration bench located in the structure’s lateral cavity.