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Heat & Glo • RED40, RED40ST • 2155-900 Rev. o • 7/1256
Non-Combustible Finish Materials
0 - 1 inch thickness-Overlap Fit Method
The mesh front is designed to overlap fi nish materials 0
inches to 1 inch thick. See Figure 13.7.
NOTICE: This one inch maximum not only includes the
decorative fi nish materials (marble, tile, slate, etc) but also
the thin set, lath and adhesive used to attach the decorative
fi nish material.
The non-combustible fi nish material can be installed up to
the 16 inch (height) by 43 inch (width) fi replace opening.
Figure 13.7 Overlap Fit Method
33-1/2 IN. HEIGHT
FACTORY INSTALLED
NON-COMBUSTIBLE BOARD
= NO SCREWS IN THIS AREA
= 2 IN. MAX. SCREW LENGTH
SIDE FINISH NON-COMBUSTIBLE
BOARD (2)
47 IN. WIDTH
FACTORY INSTALLED NON-COMBUSTIBLE BOARD
Figure 13.8 Non-Combustible Finish Material Diagram for
0-1 Inch Thick Overlap Fit Method
= AIR SPACE
1 IN.
1/2 IN.
20-3/4 IN.
FACTORY-SUPPLIED
NON-COMBUSTIBLE
BOARD
1/2 IN. THICK
WALL SHEATHING
NON-COMBUSTIBLE BOARD
ON FRONT FACE (SIDE VIEW)
COMBUSTIBLE
FRAMING
3-1/2 IN.
7-1/4 IN.
11-1/4 IN.
3-1/2 IN.
WARNING! Risk of Fire! DO NOT apply combustible
materials beyond the minimum clearances. Comply with
all minimum clearances to combustibles as specifi ed in
this manual. Overlapping materials could ignite and will
interfere with proper operation of doors and louvers.
WARNING! Risk of Fire! DO NOT install drywall or
other combustible materials directly onto the factory-
installed non-combustible board. Overlapping materials
could ignite.
Decorative facing material thickness is measured from
the face of the factory-installed non-combustible board.
See Figure 13.5 and Figure 13.6.
The mesh front can be installed such that it overlaps
non-combustible materials up to 1 in. thick. See Figure
13.7and Figure 13.8.
Refer to Section 1.E and 1.F of this manual for defi nition
and qualifi cations and defi nition of non-combustible and
combustible materials.
Specifi c requirements for each method if installation are
described below and on the following pages of this section.