Installation
900738-00 04/2017
Innovative Hearth Products
MHD35 Series Direct-Vent Gas Fireplaces
17
Table 10 - Fireplace Framing Specifi cations
Model
A *
B
C
D
E
Vent Framing—Top Vent
with One 90° Elbow
NOTE:
Dimension “D” is the
required framing depth when
the fi nish material (drywall)
thickness is 1/2” (13mm).
Inches (millimeters)
Framing
construction to be
2 x 4, or larger.
B
C
D
A
1/2 A
5-1/8
(130)
7 (178)
12-1/8
(308)
10-1/2
(267)
E
35” Models
38
(966)
38-5/8
(981)
38-3/4
(984)
18
(447)
23-3/8
(594)
C = Minimum height of top vent installations
E = Minimum height of rear vent installations
* Minimum opening size; additional 1/8” per side is recommended.
NOTE:
Framing specifi cations do NOT apply for fl exible venting.
When using fl exible venting, refer to the kit requirements for framing
specifi cations.
Table 11 - Fireplace Framing Specifi cations—Corner Installation with Horizontal Termination
Model
A
B
C
D
E
F
35”
38
(966)
59-1/2
(1511)
42-1/8
(1070)
30-1/4
(768)
14-1/4
(362)
6-5/8
(168)
Table 12 - Fireplace Specifi cations
J
K
NOTE:
When fi nishing the area around the hood, 5/8” clearance above hood is required for hood installation.
Top View
Front View
Left Side View
Right Side View
A
B
C
D
E
F
G
H
Blower
access panel
Hood
Junction
box access
Gas line
access
I
K
Model
A
B
C
D (door)
E
F
G
H
I
J
K
35” Models
38-1/2 (978)*
28-3/4 (730)
22-1/4 (565)
32-3/8 (822)
37-7/8 (962)*
25 (635)
12-1/2 (317)
32-7/8 (835)
6-7/8 (175)
17 (432)
10-1/8 (257)
*Dimensions include top and side panels (shipped installed)
Fireplace corners should be
1” minimum from back wall
B
A
C
Inches
(millimeters)
D
E
Back wall of chase/enclosure (including fi nishing materials)
7
(178)
F
