IM 1068 / Page 5 of 32
Wall Box
007–012
64
89
102
127
152
178
203
229
254
“B” Dimension
019
64
89
114
140
165
191
216
241
267
007–012
267
292
305
330
356
381
406
432
457
Overall Length
019
298
324
349
375
400
425
451
476
502
Wall Box
007–012
2
1
⁄
2
3
1
⁄
2
4
5
6
7
8
9
10
“B” Dimension
019
2
1
⁄
2
3
1
⁄
2
4
1
⁄
2
5
1
⁄
2
6
1
⁄
2
7
1
⁄
2
8
1
⁄
2
9
1
⁄
2
10
1
⁄
2
007–012
10
1
⁄
2
11
1
⁄
2
12
13
14
15
16
17
18
Overall Length
019
11
3
⁄
4
12
3
⁄
4
13
3
⁄
4
14
3
⁄
4
15
3
⁄
4
16
3
⁄
4
17
3
⁄
4
18
3
⁄
4
19
3
⁄
4
Dimension “C” – Cabinet Depth
Dimension “A”
007–012
019
in.
mm
in.
mm
in.
mm
0 to -1
0 to -25
8
1
⁄
4
210
—
—
0 to +1
0 to +25
9
1
⁄
4
235
8
1
⁄
2
216
1 to 2
25 to 51
10
1
⁄
4
260
9
1
⁄
2
241
2 to 3
51 to 76
11
1
⁄
4
286
10
1
⁄
2
267
3 to 4
76 to 102
12
1
⁄
4
311
11
1
⁄
2
292
4 to 5
102 to 127
13
1
⁄
4
327
12
1
⁄
2
318
5 to 6
127 to 152
14
1
⁄
4
362
13
1
⁄
2
343
6 to 7
152 to 178
15
1
⁄
4
387
14
1
⁄
2
368
7 to 8
178 to 203
16
1
⁄
4
413
15
1
⁄
2
394
8 to 9
203 to 229
17
1
⁄
4
438
16
1
⁄
2
419
Dimension “B”
will vary by the thickness of the wall, the louver, the amount
the louver is recessed into the wall (if any) and the amount the wall box extends
into the room. The minimum “B” dimension is 2
1
⁄
2
'' (64mm). The wall box can
be factory furnished in increments between 2
1
⁄
2
'' (64mm) and 10'' (254mm).
Wall box extensions in 1'' (25mm) increments can also be provided to attach
to the rear of the wall box.
Figure 3: Wall Box End View (Drawing Not To Scale)
Table 2: Wall Box Dimensions
Dimensions — inches
Table 3: Wall Box “B” Dimension
Dimensions — mm
NOTICE
Wall Box Installation
The wall thickness will determine how much, if any, of the
wall box will protrude into the room. Figure 3 shows a typical
installation in a frame and brick wall. These instructions will
vary by depth of wall, but not by wall material. Do not
remove the weather panel at any time during the installation
of the wall box. Premature removal of this panel could
result in improper leveling or sealing. Install the wall box as
follows:
1. If the wall opening has not been made, cut and break
through using care to leave interior and exterior surfaces
undamaged. See wall opening requirements on page 4 for
proper size.
2. Install lintels as shown on the plans and specifications.
3. If the wall opening has already been made, measure it to
be certain it has adequate clearance for the wall box. Be
sure to allow extra clearance for insulation around the
wall box to reduce sound and heat transfer. Continue with
step #4.
4. Apply a layer of mortar or roofing cement to the bottom
surface of the opening (see Figure 3).
5. Place 2'' (51mm) fiberglass batt or 1" (25mm) Styrofoam
insulation around the top and sides of the wall box.
6. Locate the wall box in the wall opening with the weather
panel to the outside. Use the top edge of the wall box for
horizontal leveling. The wall box must also be vertically
plumb. Shim the wall box to accomplish this. Recess so
louver is flush with outside wall.
7. Drill four (4) holes in the sides of the wall box and attach
it to the walls securely using appropriate fasteners.
Note:
Never drill through bottom of wall box.
8. If face brick is being installed, continue coursing up the
wall until the wall box is completely surrounded and
becomes an integral part of the wall.
9. Caulk interior and exterior perimeter weather tight where
the box meets the wall. Use a non hardening, waterproof
caulk such as silicone.
Note:
For rooms with thick carpet, wall box should be
installed 1/2'' (13mm) above concrete floor to facilitate
future chassis installation and removal.
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