Air showers are self-contained air recirculation systems installed at entrances to cleanrooms and other controlled environments. Since people and products are the main sources of cleanroom contamination, these cleanroom entry systems quickly and efficiently remove particulate contaminants from workers or products before they enter a clean space.

Personnel and materials entering or exiting the controlled environment are “scrubbed” with H14-filtered air by high-velocity air jets running at 18-30 m/s (3543-5906 fpm). Contaminated air is then drawn through the base within the unit, filtered and recirculated.