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FURNACE
CASING
WIDTH
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
14–3/16
Downflow applications on combustible flooring (KGASB sub-
(360)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
17–1/2
Downflow applications on combustible flooring (KGASB sub-
(445)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
21
Downflow applications on combustible flooring (KGASB sub-
(533)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
24--- 1/2
Downflow applications on Combustible flooring (KGASB sub-
(622)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
APPROVED
COIL ASSEMBLY
COMBUSTIBLE
FLOORING
SHEET METAL
Fig. 13 - - Furnace, Plenum, and Coil Assembly or
Coil Box Installed on a Combustible Floor
Table 4 – Opening Dimensions - - In. (mm)
APPLICATION
subbase not required)
base required)
(KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
FURNACE
OR
COIL BOX
PLENUM
FLOOR
OPENING
PLENUM OPENING
A
12--- 11/16
(322)
12--- 9/16
(319)
11--- 13/16
(284)
12--- 5/16
(313)
16
(406)
15--- 7/8
(403)
15--- 1/8
(384)
15--- 1/2
(394)
19--- 1/2
(495)
19--- 3/8
(492)
18--- 5/8
(473)
19
(483)
23
(584)
22--- 7/8
(581)
22--- 1/8
(562)
22--- 1/2
(572)
12
FLOOR OPENING
B
C
21--- 5/8
13--- 5/16
22--- 1/4
(549)
(338)
(565)
19
13--- 3/16
19--- 5/8
(483)
(335)
(498)
19
13--- 7/16
20--- 5/8
(483)
(341)
(600)
19
13--- 5/16
(483)
(338)
(508)
21--- 5/8
16--- 5/8
22--- 1/4
(549)
(422)
(565)
19
16--- 1/2
19--- 5/8
(483)
(419)
(498)
19
16--- 3/4
20--- 5/8
(483)
(425)
(600)
19
16--- 1/2
(483)
(419)
(508)
21--- 5/8
20--- 1/8
22--- 1/4
(549)
(511)
(565)
19
20
19--- 5/8
(483)
(508)
(498)
19
20--- 1/4
20--- 5/8
(483)
(514)
(600)
19
20
(483)
(508)
(508)
21--- 1/8
23--- 5/8
22--- 1/4
(537)
(600)
(565)
19
23--- 1/2
19--- 5/8
(483)
(597)
(498)
19
23--- 3/4
20--- 5/8
(483)
(603)
(600)
19
23--- 1/2
(483)
(597)
(508)
A08556
D
20
20
20
20
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