507768-05
Page 20 of 56
Issue 2128
96G1UHE Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 - 4,500 ft
Number
of 90°
Elbows
Used
1-1/2” Pipe
2” Pipe
2-1/2" Pipe
3" Pipe
Capacity
Capacity
Capacity
Capacity
030
045
070
090
110
030
045
070
090
110
030
045
070
090
110
030
045
070
090
110
1
20
15
10
n/a
n/a
68
53
37
17
100
85
59
34
116
116
109
109
2
15
10
n/a
63
48
32
12
95
80
54
29
111
111
104
104
3
10
n/a
58
43
27
7
90
75
49
24
106
106
99
99
4
n/a
53
38
22
n/a
85
70
44
19
101
101
94
94
5
48
33
17
80
65
39
14
96
96
89
89
6
43
28
12
75
60
34
n/a
91
91
84
84
7
38
23
7
70
55
29
86
86
79
79
8
33
18
n/a
65
50
24
81
81
74
74
9
28
13
60
45
19
76
76
69
69
10
23
8
55
40
14
71
71
64
64
Concentric Termination Elevation 4501 - 10,000 ft
Number
of 90°
Elbows
Used
1-1/2” Pipe
2” Pipe
2-1/2" Pipe
3" Pipe
Capacity
Capacity
Capacity
Capacity
030
045
070
090
110
030
045
070
090
110
030
045
070
090
110
030
045
070
090
110
1
20
15
10
n/a
n/a
68
53
37
n/a
100
85
59
34
116
116
109
109
2
15
10
n/a
63
48
32
95
80
54
29
111
111
104
104
3
10
n/a
58
43
27
90
75
49
24
106
106
99
99
4
n/a
53
38
22
85
70
44
19
101
101
94
94
5
48
33
17
80
65
39
14
96
96
89
89
6
43
28
12
75
60
34
n/a
91
91
84
84
7
38
23
7
70
55
29
86
86
79
79
8
33
18
n/a
65
50
24
81
81
74
74
9
28
13
60
45
19
76
76
69
69
10
23
8
55
40
14
71
71
64
64
*Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and
Exhaust must be same pipe size.
Table 5B.