Osburn
Matrix
Inbuilt
Installation
and
Operation
Manual
50
______________________________________________________________________________
Note
that
secondary
air
tubes
(A)
can
be
replaced
without
removing
the
baffle
board
(B).
Important
Notes:
The
air
tubes
are
identified
for
placement
as
follows:
Model
Type
of
tube
Matrix
wood
inbuilt
Front
►
30
holes
of
3.75mm
Middle
front
►
30
holes
of
3.5mm
Middle
rear
►
20
holes
of
3.25mm
Rear
►
15
holes
of
3.25mm
