Heatilator • GDST5244I • 4045-127 • Rev W • 11/08 43
0 in. min.
to perpendicular wall
A
4-5/8 in. (117 mm) min.
from fireplace opening
to perpendicular wall
B
Mantel Leg or
Perpendicular Wall
Top of
Appliance Drywall
A
B
Measured from top of fireplace opening (in inches)
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
4-5/8
6-1/4
7
7-3/4
8-1/2
9-1/4
1010-3/4
11-1/2
12-1/413
13-3/4
14-1/2
15-1/4
16
16-3/4
30 in. minimum
to ceiling
13
13 Finishing

A. Mantel and Wall Projections

WARNING! Risk of Fire! Comply with all minimum clear-
ances to combustibles as specifi ed. Framing or fi nishing
material closer than the minimums listed must be construct-
ed entirely of noncombustible materials (i.e., steel studs,
concrete board, etc).
Figure 13.1 Minimum Vertical and Maximum Horizontal Dimensions
Figure 13.2 Mantel Leg or Wall Projections (Acceptable on both
sides of opening)

Mantels

Mantel Legs or Wall Projections

0 in. 0 in.
0 in.
Finish wall material may be
combustible - Top and Sides
High Temperature Sealant (300° F/149° C min.)
Top and Side Seal Joint

B. Facing Material

• Metal front faces may be covered with non-combustible
materials only.
• Facing and/or fi nishing materials must not interfere with
air fl ow through louvers, operation of louvers or doors,
or access for service.
• Facing and/or fi nishing materials must never overhang
into the glass opening.
• Observe all clearances when applying combustible
materials.
• Seal joints between the fi nished wall and appliance top
and sides using a 300 °F minimum sealant. Refer to
Figure 13.3.
WARNING! Risk of Fire! DO NOT apply combustible ma-
terials beyond the minimum clearances. Comply with all
minimum clearances to combustibles as specifi ed in this
manual. Overlapping materials could ignite and will inter-
fere with proper operation of doors and louvers.
Figure 13.3 Noncombustible Facing Diagram