8
Dimensions
B
C
D
E
A
Model
Wheel
Diameter
Shaft Size
Dimensions
Shipping
Weight
Recommended Roof
Opening
Curb Size
A
B
C
D
E
5BDD 10
10 1/2
5/
8
19
25 3/4
22 7/8
3
1 1/2
90
14 1/2 SQ.
17 1/2
5BDD 12
12 1/4
5/
8
22
28
23 3/8
3
1 1/2
100
17 1/2 SQ.
20 1/2
5BDD 13
13 1/2
5/
8
22
29 3/4
24 5/8
3 1/4
1 1/2
110
17 1/2 SQ.
20 1/2
5BDD 15
15
7/
8
26
31 11/16
27 3/8
3 3/4
1 1/2
120
21 1/2 SQ.
24 1/2
5BDD 16
16 1/2
7/
8
26
33 11/16
27 3/4
4 3/16
1 1/2
130
21 1/2 SQ.
24 1/2
5BDD 18
18 1/4
7/
8
30
36
29 5/8
4 3/4
1 1/2
164
25 1/2 SQ.
28 1/2
5BDD 20
20
7/
8
30
36 1/4
30 1/4
5 1/4
1 1/2
185
25 1/2 SQ.
28 1/2
5BDD 24
21 1/2
7/
8
34
44 1/4
33
6 11/16
1 1/2
212
29 1/2 SQ.
32 1/2
5BDD 30
30
1 3/16
42
51 7/16
37 1/2
8 13/32
1 1/2
310
37 1/2 SQ.
40 1/2
5BDD 36
36 1/2
1 3/16
46
60
41 5/8
10 1/2
1 1/2
380
43 1/2 SQ
44 1/2
Dimensional information is in inches.
Belt-Drive Downblast Roof Ventilators
Model
Wheel
Diameter
Shaft Size
Dimensions
Shipping
Weight
Recommended Roof
Opening
Curb Size
A
B
C
D
5DDD 085A
8
n/a
19
18 7/8
13 1/4
3 1/2
26
14 1/2 SQ.
17 1/2
5DDD 106A & 10AA
10 1/2
n/a
19
22 3/8
16 1/2
3 3/8
94
14 1/2 SQ.
17 1/2
5DDD 12CA
12 1/4
n/a
22
24 1/4
17 1/8
4
101
17 1/2 SQ.
20 1/2
5DDD 13DB
13 1/2
n/a
22
25 5/8
18 1/8
4 3/8
115
17 1/2 SQ.
20 1/2
5DDD 15CA
15
n/a
26
27 7/8
18 1/2
4 3/8
132
21 1/2 SQ.
24 1/2
5DDD 16DB
16 1/2
n/a
26
29 3/4
20 1/4
4 3/4
142
21 1/2 SQ.
24 1/2
5DDD 18EB
18 1/4
n/a
30
31 5/8
21 3/8
5 5/8
157
25 1/2 SQ.
28 1/2
Direct-Drive Downblast Roof Ventilators
A
D
C
B
1.50
Dimensional information is in inches.
