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:
Height — Fits 2 courses concrete block
— Fits 6 courses standard brick
— Fits 5 courses jumbo brick
Width — Fits approximately 2 stud spaces.
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
Header—4″ × 4″ or
two 2″ × 4″ on edge
Jack studs
Adjust framing
to secure this
″ Min.
26
⁄
1
8
dimension
″ Min.
15
⁄
3
4
“D”*
( *See chart
on page 1)
Cripple
Jack studs
Finished
Sub-floor
floor
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.)
* Dimensions may need to be
MINIMUM
increased to fit unique situations
FINISHED
in the field if using case angles.
OPENING
DIMENSIONS*
CASE DIMENSIONS
Height
Width Height Width
Depth
″
″
″ 26
″
15
⁄
26
⁄
15
⁄
⁄
16″
3
1
5
1
4
8
8
16
NOTE:
If an RAB47 or RAB48 or RAK66 Wall Case
Insulation pad is installed, remove it before installing
the unit.