18
6
6 Framing & Clearances
F
E
D
BC
Across a
corner
G
As a
room
divider
A
48 in.
(1219 mm)
minimum
B
Along a wall
B
A5/8 in. (16 mm) all
configurations
G
3/4 in. (19 mm) min. air
space from fireplace to
combustible materials. 1/2
in. (13 mm) allowed at
nailing flanges.
Note:
Note: In addition to these
framing dimensions, also
reference the following
sections:
• Clearances (Section
6.B.)
• Mantel Projections
(Sections 11.E. & 11.F.)
• Fireplace Dimensions
(Section 13.A.)
G
A
In an exterior chase
or projecting into a
garage
B

Note: Measurements are FRAMING dimensions only and do

not include drywall either in the cavity or on the interior walls.

H
H
H
Figure 6.1 Fireplace Locations (Framing dimensions shown)

A. Select Fireplace Location

Model # A B C D E F G H
A36 in. 51 43 74 7/8 35 3/4 15 3/4 53 23 12 in. (305 mm)
Minimum from FP
opening to any
perpendicular wall.
mm 1295 1092 1902 908 400 1346 584
A42 in. 57 49 77 1/2 38 7/8 18 54 7/8 23
mm 1448 1245 1969 987 457 1394 584
Heatilator • A36C & A42C • 28396 • Rev AG • 11/08