6
4”
8”
Rough Frame Opening
Rough
Frame
Opening
See Installation
Manual packed
with appliance
for minimum
combustible
cavity dimensions
Min. 1/2”
clearance to
combustibles
at ends
See detail
LDK 1 = 49”
LDK 4 = 39”
LDK 3 = 15”
LDK 1 = 4”
LDK 4 = 4”
LDK 3 = 8”
LDK 1 & 4
LDK 3
20” min.
Framing
“on edge”
1-1/2” min. clearance
to combustibles (top)
Ceiling
Min. 2-1/2” clearance to ceiling
2 x 4 on edge
2 x 4 on edge
F
raming on edge
1/2”
1/2” min.
clearance to
combustibles
rear & sides
1” min.
clearance to
combustibles
all around pipes
2 x 4 on edge
to support
plenum.
Maintain 1”
clearance
to pipes
Framing
“on edge”
1-1/2” min. clearance
to combustibles (top)
Ceiling
Min. 2-1/2” clearance to ceiling
1/2”
1/2” min.
clearance to
combustibles
rear & sides
1” min.
clearance to
combustibles
all around pipes
Framing and Clearances