10
S
UBMITTAL
R
ECORD
FOR
D
URA
S
TACK
M
ODELS
DCL,
DAS1,
DIS1,
DIS2
AND
DIS4
M&G
D
URA
V
ENT
|
10
J
UPITER
L
ANE
|
A
LBANY
,
N
EW
Y
ORK
www.duravent.com
ELBOW OFFSETS
The following tables provide the MINIMUM offsets for the
various elbows
Table 8a, 8b, 8c and 8d
Figure 28 – MINIMUM OFFSET for ELBOWS
TABLE
8a
‐
Minimum
Offset
for
Each
Elbow
‐
DCL
Diameter
Ø (in)
3°
15°
30°
45°
90°
5
3/8
2
4
1/8
6
1/4
13
1/4
6
3/8
2
4
1/4
6
5/8
14
1/4
7
3/8
2
4
3/8
6
7/8
15
1/4
8
3/8
2
4
1/2
7
1/8
16
1/4
9
3/8
2
1/8
4
5/8
7
1/2
17
1/4
10
3/8
2
1/8
4
3/4
7
3/4
18
1/4
11
3/8
2
1/8
4
7/8
8
19
1/4
12
3/8
2
1/8
5
8
3/8
20
1/4
13
3/8
2
1/4
5
1/8
8
5/8
21
1/4
14
3/8
2
1/4
5
1/4
8
7/8
22
1/4
16
3/8
2
3/8
5
1/2
9
1/2
24
1/4
18
3/8
2
3/8
5
3/4
10
1/8
26
1/4
20
3/8
2
1/2
6
1/8
10
5/8
28
1/4
22
3/8
2
1/2
6
3/8
11
1/4
30
1/4
24
3/8
2
5/8
6
5/8
11
7/8
32
1/4
26
3/8
2
5/8
6
7/8
12
1/2
34
1/4
28
3/8
2
3/4
7
1/8
13
36
1/4
30
3/8
2
3/4
7
3/8
13
5/8
38
1/4
32
3/8
2
7/8
7
5/8
14
1/8
40
1/4
34
3/8
3
8
14
3/4
42
1/4
36
3/8
3
8
1/4
15
3/8
44
1/4
Dimensions
are
in
inches
TABLE 8b
Minimum Offset for Each Elbow -
DAS1 & DIS1
Diameter
Ø (in)
3° 15° 30° 45° 90°
5
1/2
2 1/2 5 1/4
8 1/4
18 1/2
6
1/2
2 1/2 5 3/8
8 1/2
19 1/2
7
1/2
2 5/8 5 1/2
8 3/4
20 1/2
8
1/2
2 5/8 5 3/4
9 1/8
21 1/2
9
1/2
2 5/8 5 7/8
9 3/8
22 1/2
10
1/2
2 5/8
6
9 5/8
23 1/2
11
1/2
2 3/4 6 1/8
10
24 1/2
12
1/2
2 3/4 6 1/4 10 1/4
25 1/2
13
1/2
2 3/4 6 3/8 10 1/2
26 1/2
14
1/2
2 3/4 6 1/2 10 7/8
27 1/2
16
1/2
2 7/8 6 3/4 11 3/8
29 1/2
18
1/2
3
7
12 31 1/2
20
1/2
3 7 1/4 12 5/8 33 1/2
22
1/2
3 1/8 7 5/8 13 1/8 35 1/2
24
1/2
3 1/8 7 7/8 13 3/4 37 1/2
26
1/2
3 1/4 8 1/8 14 3/8 39 1/2
28
1/2
3 1/4 8 3/8 14 7/8 41 1/2
30
1/2
3 3/8 8 5/8 15 1/2 43 1/2
32
1/2
3 3/8 8 7/8 16 1/8 45 1/2
34
1/2
3 1/2 9 1/8 16 3/4 47 1/2
36
1/2
3 1/2 9 1/2 17 1/4 49 1/2
Dimensions are in inches
