Framing Specifications - Lennox MPB3328CNM-B Installation Instructions Manual

Merit plus series mpb b-vent gas fireplaces
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FRAmING SpECIFICATIONS

Fireplace Framing
K
Corner Installation
Note: All framing dimensions calculated for 1/2" dry wall at the appliance face. If sheathing the chase or finishing with other thickness
materials, calculations will need to be made.
* Outside air kit - FOAK (without adapter). See Figure 22 on Page 16.
A
M
d o
l e
N
. o
U
n
t i
i S
e z
33-1/8
in.
MPB3328
mm
842
. n i
5 3
1 -
8 /
MPB3530
m
m
8
2 9
. n i
0 4
1 -
8 /
MPB4035
m
m
0 1
9 1
. n i
0 4
1 -
8 /
45-1/8
MPB4540
m
m
1 1
6 4
1146
Figure 9
Header
b
A
back Wall of Chase/Enclosure
Including Finishing materials
if any
d
F
G
C
A
E
Rough
Framing Face
(Unfinished Shown)
A
F
a r
m
i
g n
B
C
i S
e z
33-1/4
33-1/4
21-1/2
845
546
845
24-7/8
5 3
1 -
4 /
5 3
1 -
4 /
9 1
8
5 9
8
5 9
632
4
3 8
0 4
1 -
4 /
0 4
1 -
4 /
29-7/8
4 2
0 1
2 2
0 1
2 2
6
0 1
759
5 4
1 -
4 /
0 4
1 -
4 /
4 2
34-7/8
1 1
9 4
0 1
2 2
6
0 1
886
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
*Optional FOAK
Outside
Air Kit
J
Rough Framing Face
(Unfinished Shown)
H
Inside Chase
D
E
F
11-1/4
48-1/2
24-1/4
286
1232
616
12-3/4
9 1
5 -
8 /
7 5
1 -
2 /
8 2
3 -
4 /
4
8 9
4 1
0 6
7
0 3
324
14-11/16
4 2
5 -
8 /
1 6
1 -
/ 3
6 1
3
- 0
/ 1
6 1
30-11/16
6
5 2
5 1
0 7
7
9 7
373
9 2
5 -
8 /
6 6
3 -
8 /
3
- 3
/ 3
6 1
17-3/16
7
2 5
6 1
6 8
8
3 4
437
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
C
G
A
Outside Chase
back Wall of Chase/Enclosure
Including Finishing materials
if any
C
G
A
H
Rough
Framing Face
(Unfinished Shown)
G
H
J
4-1/16
13
4
330
103
102
7-1/16
6 1
4
- 6
/ 9
6 1
4
6 0
1
2 0
1
7 6
179
6 1
4
- 6
/ 9
6 1
7-1/16
4
6 0
1
2 0
179
1
7 6
6 1
4
7-1/16
- 6
/ 9
6 1
4
6 0
1
2 0
179
1
7 6
K
34-5/16
872
0 4
5 -
8 /
0 1
2 3
3 4
1 -
/ 1
2 3
1 1
1 0
6 4
1 -
/ 5
6 1
1 1
2 9
9

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