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Innovative Hearth Products
DRT4200 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 12 - Fireplace Framing Specifications - Corner Installation with Horizontal Termination
Model
A
40-3/8
40"
(1026)
45-3/8
45"
(1153)
Table 11 - Fireplace Specifications
F
G
Top View
Model
A
40" Models
37-1/8 (943)
45"Models
37-1/8 (943)
18
B
C
D
41-1/4
43-3/4
22
(1048)
(1111)
(559)
41-1/4
55-3/4
22
(1048)
(1417)
(559)
B
C
D
78-1/4
45-3/8
40-1/2
(1988)
(1153)
(1029)
85-7/8
61
40-1/2
(2182)
(1550)
(1029)
I
A
K
B
C
D (door)
33-1/4 (845)
27-1/4 (692)
37-3/8 (949)
33-1/4 (845)
27-1/4 (692)
42-3/8 (1076)
E
NOTE: Dimension "D" is the
required framing depth when
28-1/4
(717)
the finish material (drywall)
thickness is 1/2" (13mm).
N/A
(top vent only)
Vent Framing—Top Vent
with One 90° Elbow
B
Inches (millimeters)
E
15-7/8
Front to rear with 1" distance to wall
(404)
17-1/2
(445)
Back wall of chase/enclosure (including finishing materials)
E
C
D
B
Blower
access panel
H
Front View
E
F
40-1/4 (1022)
30 (762)
45-1/4 (1149)
35 (889)
C
E
D
1/2 A
A
E
C
A
B
J
Hood
Junction
box access
Gas line
access
Left Side View
G
H
I
15 (381)
37-7/8 (962)
6-7/8 (175)
17-1/2 (445)
42-7/8 (1089)
6-7/8 (175)
Installation
900636-01, 01/2017
Framing
construction to be
10-1/2
2 x 4, or larger.
(267)
7 (178)
5-1/8
12-1/8
(130)
(308)
7 (178)
D
Inches
(millimeters)
K
Right Side View
J
K
21 (534)
12-3/8 (315)
21 (534)
12-3/8 (315)
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