Sizing and Selection of Sand Trap Louvers 

Sand Trap Louvers are generally used as prefilter for
fresh air intake of Air Handling Units (AHU), Package
Air Conditioning Units (PACU), Roof Top Fresh Air Units
(RTFAU) for Air Conditioning Systems and for Fresh Air
Intake in manufacturing plants. These louvers are able
to seperate sand and large dust particles even in case of
high dust concentrations. The vertically arranged blade
sections and holes for sand drainage ensure that the sand
trap louver is self cleaning and maintenance free. It is
designed to separate large particles of sand and dust from
airstream at low velocities, thus avoiding excessive dust
loading of conventional filters. It is not intended as a
substitute for conventional filters.
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