
Heat & Glo • RH-36/RH-42 • 4044-153 Rev U • 11/07
11
C. Sidewalls/Surrounds
Adjacent combustible side walls must be located a minimum of 12 in. (305 mm) from the
fi
replace opening. See Figure 3.3.
If you are using a decorative surround constructed of combustible material, it must be located within the shaded area de-
fi
ned in Figure 3.3. Short stub walls are also acceptable if they are contained within the shaded area.
D. Frame the Fireplace
Figure 3.4 shows a typical framing (using 2 x 4 lumber) of the
fi
replace, assuming combustible materials are used. All re-
quired clearances to combustibles around the
fi
replace must be adhered to. See Figure 3.2. Any framing across the top of
the
fi
replace must be above the level of the top standoffs.
9-3/4 in.
(248 mm)
14-3/8 in.
(365 mm)
12 in.
(305 mm)
4 in.
(102 mm)
Brick
Front
Flush
Front
12 in.
(305 mm)
A
B
50 deg.
39 deg.
Figure 3.3 Sidewalls and Surrounds
C
B
A
2 in. (51 mm) min.
air clearance to
the enclosure
and the
header.
Figure 3.4 Framing the Fireplace
Note:
If the inside of the framed cavity
is to be
fi
nished, the framing dimensions
must
include the
fi
nished surface. If
drywall is to be attached to the rear
wall, the depth must be measured from
the drywall surface.
Model #
A
B
C
RH-36
in.
42
40-1/4
21-1/2
mm
1067
1022
546
RH-42
in.
48
40-1/4
21-1/2
mm
1219
1022
546
Model #
A
Fireplace
Opening
B
Outside
Dimensions
RH-36
in.
36
41
mm
914
1041
RH-42
in.
42
47
mm
1067
1194