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STEP 1
Preparation of the wall
The wall case should be installed during construction
and lintels should be used to support the block above
the wall case. The case will not support the concrete
block or brick. The case is modular in height and
width:
For existing construction, wall openings must be
made. Wall openings of the proper dimensions are
essential to avoid the necessity of fillers or additional
framing.
Main stud
Jack studs
16
Min.
1 4
42
≤
1
42
1 4
16
/
4
Cripple
Jack studs
NOTE:
Use lintel to support brick, block, etc., above the air
conditioner case. (If directly under a window sill,
the use of a lintel may not be necessary.)
MINIMUM
FINISHED OPENING
DIMENSIONS*
Height
Width
Height
16
/
"
42
/
"
16"
1
1
4
4
* Dimensions may need to be increased to fit unique situations in the field if using
case angles.
× 4 or
two 2 × 4 on edge
Adjust
≤
1
/
2
framing to
Min.
secure these
dimension
"D"*
( *See chart
on page 1)
CASE DIMENSIONS
Width
Depth
RAB71B
RAB7116B
RAB7124B
42"
/
"
16"
4
STEP 2
Preparation of the case
Do not remove the cardboard stiffener inside the case
until the chassis is installed.
If field-supplied case angles are to be used and must
be installed, proceed as follows:
1. Position the case angles around top and sides
of the case at the desired location (front to rear)
with angles facing toward rear (outside). Position
the case angles vertically on each side of the case
to provide a level installation.
2. Mark the case through the holes in the case angles.
3.
on the case and assemble the angles using only
#10 1/2 screws. Install the screws from the
outside of the case.
NOTE:
Do not drill any holes in bottom of the case.
Roomside
Case angle
(field-supplied)
Block
24"
2
diameter holes at marked locations
Case
Brick
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