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B
C
D
Note: E and K will change if passive heat is installed.
Inches
MER36
Millimeters
Inches
MER42
Millimeters
* MINIMUM FRAMING DIMENSIONS
Inches
MER36
Millimeters
Inches
MER42
Millimeters
* Adjust framing dimensions for interior chase sheathing (such as sheetrock).
C** Add 12 inches for rear venting with one 90 degree elbow.
G*** For installations with vinyl flooring, see Section 3.E.
Figure 3.10 Clearances to Combustibles
Majestic • MER36N, MER36L, MER42N, MER42L Installation Manual • 2595-980 Rev. B • 5/23
A
* MINIMUM FRAMING DIMENSIONS
A
B
C**
Rough
Rough
Rough
Opening
Opening
Opening
(Vent Pipe)
(Height)
(Depth)
10
40-1/8
22
254
1019
559
10
42-1/8
22
254
1070
559
I
J
K
Clearance
Sides of
Front of
to Room
Appliance
Appliance
Ceiling
1/2
36
83-1/2
13
914
2121
1/2
36
83-1/2
13
914
2121
F
G
J
D
E
Rough
Clearance
Combustible
Opening
to Room
(Width)
Ceiling
42
32
1067
813
49
32
1245
813
MEASURE E FROM TOP OF
APPLIANCE OPENING OR
FROM TOP OF HOOD
I
F
G***
Minimum Hearth
Floor
Required
Appliance
0
0
0
0
0
0
0
0
E
K
H
H
Behind
1/2
13
1/2
13
21
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