Sidewalls/Surrounds - Heatilator ST42A Installation Manual

E. Sidewalls/Surrounds
• Locate adjacent combustible sidewalls a minimum of
12 in. (305 mm) from fireplace opening.
• Mantle leg, surround, stub wall, whether combustible or
non-combustible, may be constructed as shown below.
11 3/8 in.
[289 mm]
Figure 7.11 Mantel Leg, Surround or Wall Projection (acceptable on both sides of opening)
Gridlines at 1 in. scale
FLUSH
FRONT
fireplace opening
width of fireplace
12 in.
[305 mm]
Heatilator • ST42A Installation Manual • 4012-051 • Rev C • 10/03/13
BRICK
FRONT
42 in.
[1067 mm]
47 in.
[1194 mm]
12 in.
[305 mm]
4 in.
[102 mm]
9 3/4 in.
[248 mm]
33