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45
E. Combustible Mantel
• Refer to the shaded areas of Figure 12.11 for the location and dimensions of a combustible mantel.
• A combustible mantel may be positioned no lower than 22 in. (508 mm) above the top of the 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. (152mm) of the 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 replace opening.
• Combustible trim must not cover the metal surfaces of the replace.
7 ft (2134 mm)
minimum
base of fireplace
to ceiling
Combustible Wall
2 x 4 stud wall
Standoffs
Measured from top of fireplace opening
12 in./305 mm
1 1/2 in./
38 mm
maximum
22 in./559 mm
minimum
Combustible
Decorative Facing
Seal joint with
non-combustible
sealant
6 in./152 mm
minimum
12 in./305 mm
minimum
Grid represents
1 in. squares
Non-combustible
Decorative Facing
such as:
Steel, iron, brick,
tile, concrete, slate,
glass, plasters.
Mantel
Metal support to stablize wall and mantel
Figure 12.11 Clearances to Mantels or other Combustibles above Fireplace
Heatilator • Birmingham BIR42-B • 4059-681• 11/11