9
139435_A GZ
455
DV 8/28/12
4.3.2 Chase Framing
The front header and chase ceiling framing will differ
depending upon whether or not the fireplace is raised
off of the floor. All height dimensions are based from
the bottom of the fireplace cabinet, unless otherwise
noted.
Vertical vent runs require that 1 inch clearance to com
-
bustible framing members be maintained all around
the vent.
Insulated chase walls should be finished to ensure
proper clearance is maintained between vent pipe and
construction materials and also to prevent insulation
from sagging.
Use the included Simpson Dura-vent 5” x 8” to
4” x 6 5/8” Vent Reducer to transition to 4/6 vent pipe,
if permitted. See Vent Table, fig. 5.5, pg. 16.
Figure 4.5.
Basic chase framing.
CABINET MUST BE RAISED OFF FLOOR
A MINIMUM 1 INCH TO USE THE
OPTIONAL BACKER PLATE.
Figure 4.6.
Front face framing and noncombustible
area.
Bend adjustable nailing brackets
out to secure cabinet to framing.
Cabinet may be secured up to 1 1/4
inch proud of framing members to
accommodate the thickness of the
noncombustible facing material.
Gray area must be faced
with noncombustible
material such as primed
Durock®, ceramic tile,
marble, etc.
DO NOT USE WOOD,
SHEETROCK, OR OTHER
COMBUSTIBLE MATERIAL.
Noncombustible
material extends 5/8”
to each side.
Cabinet Apron Panel
