GMC11FC/GMC12UC Hardwood
and GMC13FC Oak
Cabinet Mantel
Assembly and Installation Instructions
Firebox
Perimeter Brass
Trim included
with this
Shown with Optional
Hearth Base
Mantel
W ARNING
WARNING ICON G 001
Carefully remove each mantel piece one at a time from shipping carton. Do not
try to lift all of the parts out of the box at once. This may damage mantel pieces.
IMPORTANT:
This mantel is only approved for use with CGFP28 and LFP33 series natural gas and propane fireplace systems,
CGFB32 series fireboxes, and direct-vent gas fireplace systems CDV34 and CHD34 series. Do not use mantel with any
other product. Several optional accessories are available for this mantel kit. These accessories include the GC3333F
and G3334U series hearth base kits for hardwood mantels and GC3335FB series for oak mantels. Contact dealer to
purchase optional accessories.
This mantel kit contains the following pieces:
Hardware 101472-01 101472-01 101472-01
Brass Trim Kit 102753-01 102753-01 102753-01
Trim Kit Hardware 102865-01 102865-01 102865-01
Mounting Blocks 101477-09 101477-09 101477-09
Read entire instruction sheet before assembling or installing mantel kit.
GMC11FC GMC12UC GMC13FC
The hardware package contains the following:
•15 - 1 1/4" wood screws
•Colored finishing nails
Tools required
•#2 Phillips screw driver •Pencil
•Flat head screw driver •Drill
•Measuring tape
If any of these pieces are missing or damaged, contact the dealer where you purchased
this kit or call DESA International’s Parts
Department at 1-800-972-7879 for referral
information.
GMC11FC, GMC12UC, and GMC13FC Mantels
Assembly and Installation Instructions
W ARNING
WARNING ICON G 001
Use care when finishing an unfinished mantel. Do not finish mantel pieces near running heater or open flame.
Vapors from most finishing products are highly flammable. Follow manufacturer’s guidelines when using finishing
products.
IMPORTANT:
If you are painting an unfinished mantel, apply an oil base undercoat to the mantel before painting. This will seal the
wood. After undercoat dries completely, lightly sand and apply an oil base top coat. If you do not apply an oil base undercoat and
topcoat, the wood grain will bleed through the paint.
Unpacking Mantel
W ARNING
WARNING ICON G 001
Carefully remove each mantel piece one at a time from
shipping carton. Do not try to lift all of the parts out of
the box at once. This may damage mantel pieces.
1. Carefully remove packaging materials, header, right front,
and left front one at a time from shipping carton.
2. Remove 2 screws attaching left side to right side (see Figure
1). Remove one side from shipping carton. Discard screws.
Remove 2 screws attaching other side to top. Discard screws.
Remove other side from shipping carton.
3. Remove top from shipping carton.
Header
Left Front
Right Front
Screw
Right Side
Male
Twistlock
Fastener
Screw
Right
Front
Female
Twistlock
Fastener
Side
Side
Screw
Top
Shipping Carton
Figure 1 - Removing Mantel Pieces from Shipping Carton
Assembling Mantel
1. If you must install mantel flush with wall, baseboard will
prevent proper installation of mantel. Either alter baseboard
to fit mantel or remove baseboard.
2. Insert male twistlock fasteners (located on right side) in
female twistlock fasteners (located on right front) (see Figure
2). Tighten screws of twistlock fasteners one-half turn with
flat head screwdriver. Repeat for left side. This will lock the
fasteners together.
Figure 2 - Attaching Mantel Right Front to Mantel Right Side
3. Rest header on face boards of right and left sides (see Figure
3). Push sides together to eliminate gaps with header. Push
down on header to ensure a tight fit (see Figure 4). Attach
header to right side with two 1 1/4" screws. Repeat for other
side (see Figure 4).
4. Place one mounting block on back of one of the side face
boards and the front panel. Attach mounting block to front
panel and to side face board with two 1 1/4" screws (see
Figure 4). Repeat for other side.
5. Place top on assembly (see Figure 5).
Make sure molding on top fits properly over front and side
panels. Back edge of top should be flush with back edge of
sides. From backside of mantel, locate predrilled holes near
top of left side. Attach with three 1 1/4" wood screws (see
Figure 6). Repeat above steps to attach top to right side.
Locate predrilled hole near the center of the header. Attach
the header to the top using one 1 1/4" wood screw.
Note:
If using optional hearth base with mantel, move hearth
base to installation location. If using mantel without optional
hearth base, move mantel to installation location.
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