C. Sidewalls/Surrounds
•Adjacent combustible sidewalls must be located a minimum of 12 in. (305 mm) from the fireplace opening.
•Combustible and noncombustible mantel legs, surrounds and stub walls may be constructed within the gridded area, Figure 6.3.
Grid represents 1 in. (25 mm) squares
12in.
[305 mm]
FLUSH
FRONT
50° | angle |
|
36in.
[914 mm]
40in.
[1016 mm]
BRICK
FRONT
39° | angle |
|
4in.
[102 mm]
9 3/4 in.
[248 mm]
12 in. | 12 in. |
[305 mm] | [305 mm] |
Figure 6.3 Mantel Leg or Wall Projections (Acceptable on both sides of opening)
D. Frame the Fireplace
Figure 6.4 shows typical framing using combustible materials (2x4 lumber shown).
•Observe all required air space clearances to combustible materials as shown in Figure 6.1 & 6.2.
•Framing across the top of fireplace must be above top standoffs.
You must maintain
2 in. (51 mm) min. air space clearance from the chimney to the enclosure.
Note: Fireplace Header cannot be positioned until after the fireplace assembly is in place.
41 in.
(1041 mm)
23 in.
(584 mm)
Figure 6.4 Framing the Fireplace
20 | Heat & Glo • |