Weather
Cowls
are
used
to
prevent
ingress
of
water
into
discharge
stacks.
Jet
Caps
have
the
dual
purpose
of
preventing
water
ingress
and
dispersing
discharged
air
from
a
stack.
Discharge
Ducts
are
used
for
horizontal
outlets
through walls.They
are
complete
with
mesh
grille
to
prevent
entry
by
birds
or
wildlife.
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