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Innovative Hearth Products
DRT4000 Series Direct-Vent Gas Fireplaces
Table 10 - Fireplace Framing Specifications
Model
A *
40-7/8
40" Models
(1039)
45-7/8
45" Models
(1166)
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 specifications do NOT apply for flexible venting.
When using flexible venting, refer to the kit requirements for framing
specifications.
Table 11 - Fireplace Framing Specifications—Corner Installation with Horizontal Termination
Model
A
40-3/8
78-1/4
40"
(1026)
(1988)
45-3/8
85-7/8
45"
(1153)
(2182)
Table 12 - Fireplace Specifications
F
G
Top View
Inches (millimeters)
Model
A
B
40" Models
37-1/8 (943)
33-1/4 (845)
45"Models
37-1/8 (943)
33-1/4 (845)
B
C
D
41-1/4
43-3/4
22
(1048)
(1111)
(559)
41-1/4
43-3/4
22
(1048)
(1111)
(559)
B
C
D
55-1/2
40-1/2
(1410)
(1029)
61
40-1/2
(1550)
(1029)
NOTE: When finishing the area around the hood, 5/8" clearance above hood is required for hood installation.
I
A
D
K
Front View
C
D (door)
27-1/4 (692)
37-3/8 (949)
27-1/4 (692)
42-3/8 (1076)
NOTE: Dimension "D" is the
required framing depth when
E
the finish material (drywall)
thickness is 1/2" (13mm).
28-1/4
(717)
Vent Framing—Top Vent
28-1/4
with One 90° Elbow
(717)
B
Inches
(millimeters)
E
Front to rear with 1"
distance to wall
15-7/8
(404)
17-1/2
(445)
C
Back wall of chase/enclosure
(including finishing materials)
E
C
B
Blower
access panel
H
E
F
G
40-1/4 (1022)
30 (762)
15 (381)
45-1/4 (1149)
35 (889)
17-1/2 (445)
10-1/2
(267)
5-1/8
(130)
C
E
D
1/2 A
A
E
A
B
J
Hood
Junction
box access
Gas line
access
Left Side View
Right Side View
H
I
37-7/8 (962)
6-7/8 (175)
42-7/8 (1089)
6-7/8 (175)
Installation
900697-01 01/2017
Framing
construction to be
2 x 4, or larger.
7 (178)
12-1/8
(308)
7
(178)
D
Inches
(millimeters)
K
J
K
21 (534)
12-3/8 (315)
21 (534)
12-3/8 (315)
17
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