Specification

3
DIMENSIONS
A
23 1/2
C
34 1/2
22 1/2
2 3/4
Bottom
Panel
25 3/8
22 1/2
17 1/4
17 7/8
28
B
19
22 1/2
24 7/8
15
23
1 1/4
Front Brace
BOTTOM VIEW
TOP VIEW
4 Knockouts
(both sides)
1
LEFT SIDE
RIGHT SIDE
3 1/4
Gas (Ø 1 5/8)
T-stat
(Ø 7/8)
Electric (Ø 7/8)
Vent pipe
(Ø 3”)
Cond. (Ø 1 1/16)
T-stat
(Ø 7/8)
Electric
(Ø 7/8)
Gas
(Ø 1 5/8)
Condensate
(Ø 1 1/16)
Vent pipe
(Ø 3”)
Combustion Air
FRONT VIEW
FLANGES
*SD Upflow / Horizontal Furnaces
Model #’s Dim. -A- Dim -B- Dim -C-
038D-24B
17 1/2 15 7/8 16 1/8
054D-24B
072D-35C
21 19 3/8 19 5/8
090D-35C
108D-45D
24 1/2 22 7/8 23 1/8
120D-45D
NOTE: Dimensions shown in inches.
A
34 1/2
17 1/4
10 1/4
22 1/4
22 1/2
2 3/4
22 1/2
22 1/4
25
17 7/16
29 1/2
17 1/4
22 1/2
25 3/8
Gas
(Ø 1 5/8)
T-stat
(Ø 7/8)
18 1/2
Front
Brace
LEFT SIDE
RIGHT SIDE
Electric
(Ø 7/8)
25 1/2
22 1/2
Gas (Ø 1 5/8)
Vent pipe
(Ø 3”)
Cond. (Ø 1 1/16)
B
19
FLANGES
TOP VIEW
C
BOTTOM VIEW
Electric
(Ø 7/8)
Vent pipe
(Ø 3”)
Cond. (Ø 1 1/16)
FRONT VIEW
28
3
Flue
Combustion
Air
7 1/2
*SM Downflow Furnaces
Model #’s Dim. -A- Dim. -B- Dim. -C-
054D-24B 17 1/2 15 7/8 16 1/8
072D-35C
21 19 3/8 19 5/8
090D-35C
118D-45D 24 1/2 22 7/8 23 1/8
NOTE: Dimensions shown in inches.
*SD Series -Upflow / Horizontal Furnace
*SM Series -Downflow Furnace