Bbv, sbv series natural vent gas fireplaces, Fireplace dimensions & framing, Warning – Monessen Hearth BBV400 User Manual
Page 6: Fireplace framing

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BBV, SBV Series Natural Vent Gas Fireplaces
FIREPLACE DIMENSIONS & FRAMING
Do not fill spaces around firebox with
insulation or other materials. This could
cause a fire.
W
ARNING
316 ” (797 mm)
8”
(203 mm)
14”
(356 mm)
1456O”
(368 mm)
Min. Rough
Opening
Depth
4056O” (1029 mm)
Min. Rough Opening Width
4”
B-Vent
1/2” or 5/8”
Drywall
Spacers
40"
(1016 mm)
34”
(864 mm)
2156O”
(546 mm)
36” (914 mm)
40” (1016 mm)
4056O”
(1029 mm)
Min. Rough
Opening
Height
1/2" or 5/8"
Drywall
Spacers
166M”
(426 mm)
756M”
(184 mm)
26QE”
(56 mm)
96 ”
(244 mm)
436 " (1102 mm)
61
56M
” (1556 mm)
30
6
”
(778 mm)
43
6
" (1
102 mm)
624037
400BBV dims
6”
(152 mm)
Figure 2 -
BBV400 Fireplace
Dimensions and
Framing
FIREPLACE FRAMING
Firebox framing can be built before or after the appliance is set in place. Construct firebox framing
following Figures 2 or 3 for your specific installation requirements. Refer to Figures 2 & 3 for firebox
dimensions. The framing headers may rest on the top of the firebox standoffs.
The firebox may be installed directly on a combustible floor or raised on a platform of an appropri-
ate height. When the firebox is installed directly on carpeting, tile or other combustible material,
other than wood flooring, the firebox shall be installed on a metal or wood panel extending the full
width and depth of the enclosure.