Description:A fan filter unit (FFU) is a of type of motorized air filtering
equipment. It is used to supply purified air to
cleanrooms,laboratories, medical facilities or microenvironments by
removing harmful airborne particles from recirculating air. The
units are installed within the system's ceiling or floor grid.
Large cleanrooms require a proportionally large number of FFUs,
which in some cases may range from several hundred to several
thousand. Units often contain their own pre-filter, HEPA filter and
internally controllable fan air distribution.
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