
83
Rough Frame Openings
Min. 1” below
finished ceiling
LDK 1 = 49”
LDK 4 = 39”
LDK 1 & LDK 4
LDK 3
LDK 3 = 15”
4”
5-1/2”
LDK 1 = 13”
LDK 4 = 11”
Framing on edge
Top of
plenum
support
Framing on edge
Min. 1” below
finished ceiling
8”
CL
Rough Frame Opening
Rough
Frame
Opening
See appliance’s
installation for
minimum
combustible
cavity dimensions
Note - Min. cavity
dimensions may
be dictated by
LDK plenum when
installing across
corners.
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”
2 x 4 on edge
2 x 4 on edge
Framing on edge
5”
Framing and Clearances—Plenums, front view
!
Appendix D—HeatShift™System