CLEARANCES TO COMBUSTIBLES
FRAMING DIMENSIONS
MANTEL LEG/WALL PROJECTIONS
HEARTH EXTENSION CONSTRUCTION
APPLIANCE LOCATION
MANTEL PROJECTIONS
HEARTH EXTENSIONS
73 [1854]
51-5/8"
[1311]
61-7/8"
[1572]
103-1/4"
[2623]
1/2" [13] all
configurations
In an exterior chase
or prjecting into a
garage
Across a
corner
Along a wall
92"
[2337]
61-7/8" [1572]
25-1/4"
[641]
48"
[1219]
24" [610]
from fireplace opening to
any perpendicular wall
85-7/8" [2181]
61-7/8" [1572]
85-7/8" [2181]
28-1/2"
[724]
28-1/2"
[724]
28-1/2"
[724]
61-7/8"
[1572]
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As a
room
divider
*28-1/2"
[724]
**74-1/2"
[1892]
61-7/8"
[1572]
2" [51] minimum
air space
clearance from
chimney
Framing must be extended
straight up 84" [2134] from
base of fireplace.
Extra space needed for outside
air connection. If outside air duct
has no bend, this dimension may
be reduced as long as minimum
clearances are met.
12"
[305]
21" min
[533]
12"
[305]
* If interior of chase will be drywalled, add the thickness to this measurement.
** Adjust header height for raised floor under fireplace.
50° angle
39° angle
BRICK
FRONT
FLUSH
FRONT
18-1/2"
[470]
[500]
24"
[610]
24"
[568]
60-7/8" [1546]
50" [1270]
* 2" [51]
non-combustible sealant
Tile, stone or other
non-combustible material
Floor constructed of wood or
other combustible material
1" Micore or equivalent
insulation (see Install
Manual)
Fireplace
Protective
Metal Hearth
Strip
1/2" Durock
**
The bottom of the fireplace opening is 3-3/4" [95]
above the bottom of the fireplace. Finished hearth
extension must NOT extend above this level.
74"
[1880]
50"
[1270]
12"
[305]
12"
[305]
20" [508] min raised
30" [762] min flush
(R value of hearth must be
equal to or greater than 2.32)
(insulation)
0" to level of
standoffs
Attic Insulation Shield
(ceiling)
(roof)
(attic)
(ceiling)
Attic Shield Collar
Ceiling Firestop
Storm Collar
Chase Top Flashing
1-1/2" [38] to back &
sides of appliance
(except at nailing flanges
where it is 1/2" [13])
Must have 2" [51] minimum
clearance to any cumbustible
materials including header
0" to floor
2" [51] minimum
Shaded areas represents
2" [51] minimum air space
clearance required around
pipe.
48"
[1219]
1" [25]
7 ft [2134]
minimum
floor to ceiling
Grid represents
1" squares
Notches
2 x 4 stud header
Standoffs
Measured from top of fireplace opening
12" [305]
22" [559]
minimum
Combustible Wall & Decorative Facing
1-1/2" [38]
maximum
Seal joint with
non-combustible sealant
12" [305]
minimum
6" [152]
minimum
Non-combustible
Decorative Facing
such as:
steel, iron, brick,
tile, concrete, slate,
glass, plasters.
Mantel
Specifications
MAJ/ASH50_0418
Additional information can be found online at www.majesticproducts.com
Phone: (800) 927-6841
www.majesticproducts.com
PRODUCT LISTING CODES
US UL 127
Product information provided is not
complete and is subject to change
without notice. Product installation
must adhere strictly to instructions
accompanying product to avoid risk of
fire and potential injury.
ASH50