An air shower is a self-contained enclosure that uses high velocity jets of HEPA filtered air to help decontaminate personnel and cargos prior to entering or exiting a controlled environment. The inside of the airshower is multiple  distributed nozzles, pointed at various angles to optimize the air scrubbing process. The nozzles shoot concentrated streams of class 100 micro-filtered air to blow off  particles and other contaminants clinging to the surface of personnel or equipment.

An air shower contains an air shower fan, HEPA/ULPA filter, a recirculating exhaust system, and interlocking doors. However, the design could incorporate additional features, functions, and benefits, depending on the intended use.