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E. Combustible Mantel
• See Figure 11.4.
• A combustible mantel may be positioned no lower than 12
in. (305 mm) above the top of the fi replace opening.
• A combustible mantel may have a maximum depth of
12 in. (305 mm).
• Combustible trim and materials cannot be placed within
6 in. (152 mm) of the fi replace opening (top or sides).
• Combustible materials projecting more than 1-1/2 in.
(38 mm) shall not be placed within 12 in. (305 mm) from
the top of the fi replace opening.
• Combustible trim must not cover the metal surfaces of
the fi replace.
• Mantel clearance is in accordance with Section 7-3.3.3
of ANSI/NFPA211.
12 in. (305 mm)
min.
12 in. (305 mm)
max.
Top of
Fireplace
Opening
Mantel
1-1/2 in. (38 mm) max.
6 in. (152 mm) min.
Header
Standoff
Figure 11.4 Clearances to Mantels or other Combustibles above
Fireplace
F. Sidewalls/Surrounds
• Adjacent combustible sidewalls must be located
a minimum of 12 in. (305 mm) from the fireplace
opening.
• Combustible or non-combustible mantel legs, surrounds
and stub walls may be constructed per Figure 11.5.
11.92 in.
[303 mm]
FLUSH
FRONT
40 in.
[1016 mm]
36 in.
[914 mm]
(fireplace opening)
12 in.
[305 mm]
50° angle
9 3/4 in.
[248 mm]
4 in.
[102 mm]
BRICK
FRONT
40 in.
[1016 mm]
36 in.
[914 mm]
(fireplace opening
12 in.
[305 mm]
39° angle
Figure 11.5 Mantel Leg or Wall Projections (acceptable on both sides of opening)
Heatilator • Multi-Sided Woodburning Fireplace • 34955 • Rev V • 11/08