18
6
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A
F
D
B
C
5/8 in. (16 mm) all
configurations
1-1/2 in. min. air space
from fireplace to
combustible materials.
1/2 in. min. air space at
nailing flanges.
Note:
In an exterior chase
or projecting into a
garage
Across a
corner
As a
room
divider
Along a wall
78 in.
(1981 mm)
G
B
E
Note:
In addition to these
framing dimensions, also
reference the following
sections:
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)UDPLQJ'
0DQWHO3URMHFWLRQV
(6.C)
)LUHSODFH'LPHQVLRQV
(14.A.)
48 in.
(1219 mm)
0,1,080
24 in. (610 mm)
from fireplace opening to
any perpendicular wall
A
B
G
G
B
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Model #
A
B
C
D
E
F
G
in.
72
47 7/8
89 1/8
44 5/8
20 3/8
63 1/8
28 1/2
mm
1829
1216
2264
1133
518
1603
724
BIR36
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