39'3"
12'
6"
22'3"
Duct Openings For Fan Style Floor Trusses With 4x2 Chords & Webs
All Dimensions In Inches
Dept h
P an el
S i z e
A B C D E F G
10 60 4
1
/
2
4
1
/
4
11 4
1
/
2
16 4 7
11 60 5
1
/
4
5
1
/
4
12 5
1
/
2
15 5 8
11
7
/
8
60 7
3
/
4
6
3
/
4
10 6
1
/
4
14 5
1
/
2
8
3
/
4
12 60 6
1
/
4
6
1
/
4
14 6 20 5 9
13 60 7
1
/
4
7
1
/
4
12 7 18
1
/
2
6 10
14 60 8
1
/
4
8
1
/
4
17 7 22 6 11
15 60 9
1
/
4
8
1
/
2
15 8 25 6 12
16 60 10
1
/
4
9
1
/
2
14 9 27 6 13
18 60 12
1
/
4
10
1
/
2
14
1
/
2
10
1
/
2
26 7 15
20 60 14 11
1
/
2
14
1
/
2
12 26 8 17
22 60 16 12
1
/
2
15 13 30 8 19
24 60 18 13
1
/
2
16 14 32 8 21
26 60 19 14
1
/
2
18 15 34 8 23
30 60 22 16 20 17 32 10 24
36 60 25 17
1
/
2
22 19
1
/
2
36 10 24
Typical Duct Opening Sizes For 4x2 Fan Style Floor Trusses
All Dimensions In Inches
Duct Openings For Warren Style Low Joists
Depth B A C D E F
10
12
13
14
15
16
17
18
19
20
21
22
24
18
20
20
24
24
24
24
24
24
24
24
24
24
24
30
30
30
30
30
30
30
30
30
30
30
30
4x6
5x9
5x11
6x10
6x12
6x13
6x14
7x13
7x14
7x15
8x14
8x15
8x16
5
7
8
81/2
91/2
10
101/2
11
111/2
12
121/2
13
14
41/2
53/4
6
61/2
7
71/2
71/2
8
83/4
81/2
9
9
91/4
7
9
10
11
12
13
14
15
16
17
18
19
21
FLOOR TRUSSES
Framing with Framing with
6
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