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Heat & Glo • ST-550TM-IPI • 2142-900 Rev. B • 11/0848
Note: Clearance from opening to perpendicular wall.
Figure 13.15 Non-Combustible Zone
Figure 13.14 Combustible Mantel Leg or Wall Projections
(Acceptable on both sides of opening)
SHEETROCK
AIR SPACE REQUIRED
23-3/4 in.
NON COMBUSTIBLE MATERIAL
6 INCHES
1/2 IN. WALL SHEATHING
TOP VIEW
3-1/4 in.
Min.
1/2 in.
Min.
Unlimited
FIREPLACE
OPENING
B. Mantel and Wall Projections
WARNING! Risk of Fire! Comply with all minimum clear-
ances as specifi ed. Framing or fi nishing material closer than
the minimums listed must be constructed entirely of noncom-
bustible materials (i.e., steel studs, concrete board, etc).
Note: All measurements in inches.
13
14
15
16
17
18
3
4
5
12
11
10
9
8
7
6
TOP OF HOOD OR FIREPLACE OPENING
MIN.
MAX.
12
20
21
19
32
CEILING
NON-COMBUSTIBLE
MATERIAL
6 IN.
Figure 13.12 Minimum Vertical and Maximum Horizontal
Dimensions of Combustibles
Note: All measurements in inches.
6
7
8
9
15
TOP OF HOOD OR FIREPLACE OPENING
MIN.
4
5
12
18
11
10
9
8
7
6
MAX.
3
4
2
32
CEILING
5
1
NON-COMBUSTIBLE
MATERIAL
6 IN.
1
Figure 13.13 Minimum Vertical and Maximum Horizontal
Dimensions of Non-Combustibles
Combustible Mantel
Non-Combustible Mantel