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Table 4—Opening Dimensions (In.)
FURNACE
CASING
WIDTH
APPLICATION
PLENUM OPENING
FLOOR OPENING
A
B
C
D
14–3/16
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
12-11/16
21-5/8
13-5/16
22-1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
12-9/16
19
13-3/16
19-5/8
Downflow applications on combustible flooring (KGASB
subbase required)
11-13/16
19
13-7/16
20-5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box (KGASB subbase
not required)
12-5/16
19
13-5/16
20
17–1/2
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
16
21-5/8
16-5/8
22-1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
15-7/8
19
16-1/2
19-5/8
Downflow applications on combustible flooring (KGASB
subbase required)
15-1/8
19
16-3/4
20-5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box (KGASB subbase
not required)
15-1/2
19
16-1/2
20
21
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
19-1/2
21-5/8
20-1/8
22-1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
19-3/8
19
20
19-5/8
Downflow applications on combustible flooring (KGASB
subbase required)
18-5/8
19
20-1/4
20-5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box (KGASB subbase
not required)
19
19
20
20
24-1/2
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
23
21-1/8
23-5/8
22-1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
22-7/8
19
23-1/2
19-5/8
Downflow applications on Combustible flooring (KGASB
subbase required)
22-1/8
19
23-3/4
20-5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box (KGASB subbase
not required)
22-1/2
19
23-1/2
20
Fig. 14—Duct Flanges
A02329
UPFLOW
OWNFLOW
HORIZONTAL
PREFERRED
PERMITTED
PREFERRED
PREFERRED
PREFERRED
120˚
MIN
PREFERRED
120˚
MIN
PREFERRED
120˚
MIN
90˚
90˚
PERMITTED
PERMITTED
D
13
Summary of Contents for 58CTA
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