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Pleated Media
Pleated (extended surface) filters provide
more surface area than conventional
filters due to the fore and aft pattern of
the pleat. An increase in surface area
results in increased contaminant holding
capacity and service life while reducing
energy costs.
A variety of media compositions, efficien-
cies and operating temperature ranges are
available. Both natural and synthetic
materials are used in the make-up of the
media: cellulose materials, fiberglass and
blends of cotton and polyester.
Depending on the air cleaner and the ap-
plication, the pleated filter may be the
primary filter or the second stage of a
multi-stage unit.
Adsorber Filters
Unlike particulate filters, odors in the form
of undesirable gases and vapors are most
commonly removed from the air stream
by the process of adsorption that is en-
hanced by multi-faceted porous surfaces
of certain materials. Filter trays in a vee-
bank configuration of activated carbon or
optional potassium permanganate pellets
effectively facilitate the adsorption of these
odor and gas contaminants.
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