26D4750
6
MCUF Series Vent-Free Firebox
FIREBOx, HEARTH and FRAMING DIMENSIONS
E
D
F
G
5
56M
”
32
56
”
2
56O
”
6”
A
B
2
56O
”
26
56M
"
9
6M
”
8
56M
”
37
6
”
C
264720
MCUF dims
Min. Rough
Opening
Depth
Min. Rough
Opening
Height
H - Min. Rough Opening Width
K
J
J
L
37
6M
”
I
Ref.
36MCUF
42MCUF
A
41
Z\v
"
47"
B
36"
42"
C
18
Z\v
"
18
Z\v
"
D
32"
38"
E
20
C\v
"
20
C\v
"
F
27
Z\v
"
33
Z\v
"
G
33
M\,
"
39
M\,
"
H
41
Z\v
"
47
Z\v
"
I
17
C\v
"
17
C\v
"
J
48
C\v
"
53"
K
68
M\,
"
74
M\,
"
L
34
Z\x
"
37
Z\x
"
Figure 1 -
Firebox and Framing Dimensions
A
B
C
D
E
FP2686
hearth dims
Ref. 36MCUFE-F 36MCUFD-R 42MCUFE-F 42MCUFD-R
A
26
Z\v
"
25
C\v
"
32
Z\v
"
31
C\v
"
B
15"
14
C\v
"
15"
14
C\v
"
C
32
B\,
"
31
Z\,
"
38
B\,
"
38
Z\,
"
D
25"
25"
25"
25"
E
20
Z\x
"
20
Z\x
"
20
Z\x
"
20
Z\x
"
Figure 2 -
Minimum Hearth Dimensions
