![background image](http://html1.mh-extra.com/html/olympia/ventis-class-a/ventis-class-a_installation-instructions-manual_732755015.webp)
14
Table 2
Elbow Offset
Pipe Length
Between
Elbows
15°
30°
Rise
Offset
Rise
Offset
Elbow Size
Elbow Size
10"
12"
10"
12"
10"
12" 10" 12"
0"
12 3/8 12 7/8
1 1/2
1 1/2
15
16
3 5/8
3 7/8
12"
22 5/8 23 1/8
4 1/4
4 1/4
24 1/4 25 1/4
9
9 1/4
18"
28 1/4
29
5 3/4
5 7/8
29 3/8 30 3/8
12
12 1/4
24"
34 1/4 34 3/4
7 1/4
7 3/8
34 5/8 35 5/8
15
15 1/4
36"
45 3/4 46 3/8 10 3/8 10 1/2
45
46
21
21 1/4
48"
57 3/8 57 7/8 13 1/2 13 5/8 55 3/8 56 3/8
27
27 1/4
48"+12"
69
69 1/2 16 5/8 16 5/8 65 3/4 66 3/4
33
33 1/4
48"+18"
74 3/4 75 1/4 18 1/8 18 1/4
71
72
36
36 1/4
48"+24"
80 5/8 81 1/8 19 3/4 19 3/4 76 1/8 77 1/8
39
39 1/4