34
Heat & Glo • COSMO-I30-IFT, COSMO-I35-IFT Installation Manual • 2535-980 Rev. S • 12/21
INTERIOR WALL
TOP VIEW
MANTEL LEG OR
WALL PROJECTIONS
SURROUND OPENING
1/4 in. Gap
A
*
CL
*SEE TABLE
1 or 2
∞
18 in.
12 in.
12 in.
6 in.
6 in.
4 in.
2 in.
8
8
Finishing
A. Mantel, Wall Projections & Hearth
Extensions
WARNING! Risk of Fire!
Comply with all minimum clear-
ances to combustibles as specified. Framing or finishing
material closer than the minimums listed must be construct-
ed entirely of noncombustible materials (i.e., steel studs,
concrete board, etc).
Clearance to combustible material under the insert is 1/4
inch (6 mm).
• Use leveling legs to raise insert minimum 1/4 inch (6
mm) above combustible material or outer wrap of factory
built firebox.
Combustible facings must not extend behind the insert
surround. For non-combustible material specifications
refer to Section 1.E and 1.F.
Mantels or Wall Projections - Non-Combustible
Figure 8.2 Minimum Vertical and Maximum Horizontal
Dimensions- Non-Combustible
1/4 in. gap
SURROUND
OPENING
6 in.
12 in.
12 in.
*B
*SEE TABLE
1 or 2
Note:
Measurement is taken from top of the surround
opening.
Mantel Legs or Wall Projections
INTERIOR WALL
TOP VIEW
MANTEL LEG OR WALL PROJECTIONS
SURROUND OPENING
∞
18 in.
12 in.
12 in.
1/4 in. GAP
6 in.
6 in.
4 in.
2 in.
Figure 8.1 Clearances to Mantel Legs or Wall Projections
(Acceptable on both sides of surround opening)
Non-Combustible
Combustible
Unit Size
Surround
Model
A
B
30 in.
MI30-4027
20-7/16 in.
6-9/16 in.
MI30-4230
21-7/16 in.
9-9/16 in.
MI30-4432
22-7/16 in.
11-9/16 in.
35 in.
MI35-4229
21-7/16 in.
5-1/16 in.
MI35-4432
22-7/16 in.
8-1/16 in.
MI35-4832
24-7/16 in.
8-1/16 in.
Table 1 Mantel Leg or Wall Projection Minimum Dimension
needed when Installing a Standard Surround
Note:
All numbers in Tables 1 and 2 include the 1/4 in. gap on
surround edge.
Table 2 Mantel Leg or Wall Projection Minimum Dimension
needed when Installing a Custom Surround. Front Model
Determines the Minimum Size of the Custom Surround
Unit
Size
Front Model
A
B
30 in.
INFIT
16-13/16 in. 1-1/4 in.
FS-MI, IA-MI, HARC-MI
18-9/16 in.
2-1/2 in
35 in.
INFIT
19-5/16 in. 1-1/4 in.
FS-MI, IA-MI, HARC-MI
21-1/16 in.
2-1/2 in