Framing Specifications - Lennox Hearth Products OASIS SERIES LSO-43 Installation Instructions Manual

Note: The framed depth, 25
from a framed wall, must always be measured
from a finished surface. If a wall covering such
as drywall is to be attached to the rear wall,
then the framed depth must be measured from
the drywall surface. It is important that this
dimension be exact.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
Consult all local codes.

FRAMING SPECIFICATIONS

B
A
Fireplace Framing
Figure 10
Back Wall of Chase/Enclosure
Including Finising Materials if any
A
Inside Chase
Figure 11
" (651 mm)
Framing Dimensions
A
B
C
D
E
F
G
J
K
Note: All framing dimensions calculated for 1/2"
Header
dry wall at the fireplace face. If sheathing the
chase or finishing with other thickness materials,
calculations will need to be made.
Framing Dimensions for Ceiling
Flue Type
FTF10 Vertical
FTF10
Offset 30
Outside
Air Kit
Framing Dimensions for Roof
G
Pitch
0/12
Rough
Framing Face
(Unfinished
Shown)
6/12
12/12
* Perpendicular to roof ridge
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Fireplace Opening Width
LSO-43
52 " (1343 mm)
50" (1270 mm)
31 " (806 mm)
15 " (403 mm)
82" (2083 mm)
41" (1041 mm)
25 " (651 mm)
13 " (352 mm)
58" (1473 mm)
A B
19" 19"
(483 mm) (483 mm)
19" 29"
(483 mm) (737 mm)
C D*
19" 19"
(483 mm) (483 mm)
19" 22"
(483 mm) (559 mm)
19" 27"
(483 mm) (686 mm)
Back Wall of
Chase/Enclosure
Including Finishing
Materials if any
D
K
C
A
E
Corner Installation
Figure 12
Back Wall of Chase/Enclosure
Including Finishing
Materials if any
G
A
Rough Framing Face
(Unfinished Shown)
Figure 13
Ceiling Framing
Figure 14
D
Roof Framing
Figure 15
Outside
Optional
Air Kit
Drainage Line
F
Rough
Framing Face
(Unfinished Shown)
Optional Outside
Drainage Air Kit
Line
J
Outside Chase
B
A
C
7