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13
DIMENSIONS (In.)
*
The plenum should be constructed 1/4-in. smaller in width and depth than the plenum dimensions shown above.
FURNACE
CASING
WIDTH
FURNACE IN DOWNFLOW APPLICATION
PLENUM OPENING
*
FLOOR OPENING
HOLE NO.
FOR WIDTH
ADJUSTMENT
A
B
C
D
17-1/2
Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box
15-1/8
19
16-3/4
20-3/8
3
21
Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box
18-5/8
19
20-1/4
20-3/8
2
24-1/2
Furnace with or without CD5 or CK5 Coil
Assembly or KCAKC Coil Box
22-1/8
19
23-3/4
20-3/8
1
A97427
Assembled
A88207
Disassembled
LOCATING
TAB
LOCATING
TAB
1
2
3
4
4
3
2
1
B
D
;;;;
;;;;
C
A
1
1
/
4
″
TYP
PLENUM
OPENING
FACTORY-SUPPLIED
FIELD-INSTALLED
INSULATION
A00309
A
Media/
Filter Cabinet
A
B
16"
17
16"
20"
21
20"
24"
25
24"
23
5
/
8
"
23
3
/
8
"
Furnace Side
23
3
/
4
"
Centerline Screw Slots
25
5
/
8
"
Duct Side
24
3
/
8
"
Opening with Flanges Bent
23
1
/
8
"
Opening
5
3
/
4
"
B Opening
DOWNFLOW SUBBASE
MEDIA FILTER CABINET