Assembly
of
the
Main
Duct
•
With
help
of
a
second
person
Install
the
upper
fiberglass
duct
on
top
of
the
movable
duct
as
shown
in
picture.
The
duct
will
slide
over
the
black
plastic
flange
at
the
top
of
the
movable
duct.
Slide
the
upper
duct
down
until
the
holes
align
with
the
holes
in
the
movable
duct.
Next
insert
the
brass
bushings
into
the
holes
making
sure
that
the
bushing
inserts
into
the
d
i
f h h l i
h
bl d
N
If h
recessed
portion
of
the
hole
in
the
movable
duct.
Note:
If
the
bushing
is
not
aligned
properly
the
duct
will
not
move
vertically
without
binding.
In
the
picture
you
will
notice
that
the
bushing
is
almost
flush
with
the
brass
outer
pillow
block.
If
the
bushing
sticks
out
¼”
or
more
then
the
bushing
is
not
aligned
properly.
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