20
Direct Drive
Dimensional Data
Fan
Size
A
Panel**
B*
C*
D
E
F*
Damper
Size**
Level 1
Level 1: Sizes 8 - 12
8
13
(330)
7
(178)
5
(127)
1
(25)
8
3
⁄
8
(213)
8
(203)
10
(254)
10
15
(381)
8
3
⁄
4
(222)
5
(127)
1
(25)
10
3
⁄
8
(264)
8
(203)
12
(305)
12
18
(457)
10
3
⁄
4
(273)
8
1
⁄
4
(210)
1
(25)
12
3
⁄
8
(314)
13
1
⁄
8
(333)
14
(356)
14
20
(508)
11
1
⁄
4
(286)
8
1
⁄
2
(216)
1
(25)
14
3
⁄
8
(365)
14
1
⁄
4
(362)
16
(406)
16
22
(559)
11
3
⁄
4
(298)
8
7
⁄
8
(225)
1
(25)
16
3
⁄
8
(416)
14
(356)
18
(457)
18
24
(610)
14
(356)
10
7
⁄
8
(276)
1
(25)
18
3
⁄
8
(467)
14
1
⁄
4
(362)
20
(508)
20
26
(660)
17
1
⁄
4
(438)
11
(279)
1
(25)
20
1
⁄
2
(521)
18
(457)
22
(559)
24
32
(813)
20
(508)
12
5
⁄
8
(321)
1
1
⁄
4
(32)
24
3
⁄
8
(619)
21
(533)
26
(660)
Level 1: Sizes 12 - 24
Level 2
16
22
(559)
13
1
⁄
2
(343)
10
1
⁄
4
(260)
1
(25)
16
3
⁄
8
(416)
14
(356)
18
(457)
18
24
(610)
13
1
⁄
2
(343)
10
1
⁄
4
(260)
1
(25)
18
3
⁄
8
(467)
14
1
⁄
4
(362)
20
(508)
20
26
(660)
17
1
⁄
4
(438)
13
1
⁄
2
(343)
1
(25)
20
1
⁄
2
(521)
18
(457)
22
(559)
24
32
(813)
20
(508)
13
1
⁄
2
(343)
1
1
⁄
4
(32)
24
5
⁄
8
(625)
21
(533)
26
(660)
30
38
(965)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
1
1
⁄
4
(32)
30
5
⁄
8
(778)
21
3
⁄
4
(552)
32
(813)
36
44
(1118)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
2
(51)
36
5
⁄
8
(930)
28
(711)
38
(965)
42
50
(1270)
26
(660)
18
1
⁄
4
(464)
2
(51)
42
5
⁄
8
(1083)
28
(711)
44
(1118)
48
56
(1422)
26
5
⁄
8
(676)
20
5
⁄
8
(524)
2
(51)
48
5
⁄
8
(1251)
28
1
⁄
2
(724)
50
(1270)
Level 2 & Level 3
54
62
(1575)
28
(711)
22
7
⁄
16
(570)
2
(51)
55
3
⁄
8
(1407)
30
1
⁄
8
(765)
56
(1422)
Level 3
20
26
(660)
17
1
⁄
4
(438)
13
1
⁄
2
(343)
1
(25)
20
1
⁄
2
(521)
18
(457)
22
(559)
24
32
(813)
20
(508)
13
1
⁄
2
(343)
1
1
⁄
4
(32)
24
5
⁄
8
(625)
21
(533)
26
(660)
30
38
(965)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
1
1
⁄
4
(32)
30
5
⁄
8
(778)
21
3
⁄
4
(552)
32
(813)
36
44
(1118)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
2
(51)
36
5
⁄
8
(930)
28
(711)
38
(965)
42
50
(1270)
26
(660)
18
1
⁄
4
(464)
2
(51)
42
5
⁄
8
(1083)
28
(711)
44
(1118)
48
56
(1422)
26
5
⁄
8
(676)
20
5
⁄
8
(524)
2
(51)
48
5
⁄
8
(1251)
28
1
⁄
2
(724)
50
(1270)
54
62
(1575)
28
(711)
22
7
⁄
16
(570)
2
(51)
55
3
⁄
8
(1407)
30
1
⁄
8
(765)
56
(1422)
Reversible
Reversible
24
32
(813)
20
(508)
13
1
⁄
2
(343)
1
1
⁄
4
(32)
24
5
⁄
8
(625)
-
26
(660)
30
38
(965)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
1
1
⁄
4
(32)
30
3
⁄
4
(778)
-
32
(813)
36
44
(1118)
20
1
⁄
2
(521)
16
3
⁄
8
(416)
2
(51)
36
5
⁄
8
(930)
-
38
(965)
42
50
(1270)
26
(660)
18
1
⁄
4
(464)
2
(51)
42
5
⁄
8
(1083)
-
44
(1118)
48
56
(1422)
26
5
⁄
8
(676)
20
5
⁄
8
(524)
2
(51)
49
(1251)
-
50
(1270)
54
62
(1575)
28
(711)
22
7
⁄
16
(570)
2
(51)
55
3
⁄
8
(1407)
-
56
(1422)
* Varies with motor selection. All dimensions given in inches
(mm)
. **Square dimension.
F*
D
B*
D
E
A sq.
F*
D
B*
C*
D
A sq.
Supply
Airflow
Exhaust
Airflow
Exhaust
Airflow
Supply
Airflow
Exhaust
Airflow
Supply
Airflow
F*
D
B*
C*
D
A sq.
B*
C*
D
A sq.
E
E
E
C*
Supply
Airflow
Exhaust
Airflow
F*
D
B*
D
E
A sq.
F*
D
B*
C*
D
A sq.
Supply
Airflow
Exhaust
Airflow
Exhaust
Airflow
Supply
Airflow
Exhaust
Airflow
Supply
Airflow
F*
D
B*
C*
D
A sq.
B*
C*
D
A sq.
E
E
E
C*
Supply
Airflow
Exhaust
Airflow
F*
D
B*
D
E
A sq.
F*
D
B*
C*
D
A sq.
Supply
Airflow
Exhaust
Airflow
Exhaust
Airflow
Supply
Airflow
Exhaust
Airflow
Supply
Airflow
F*
D
B*
C*
D
A sq.
B*
C*
D
A sq.
E
E
E
C*
Supply
Airflow
Exhaust
Airflow
F*
D
B*
D
E
A sq.
F*
D
B*
C*
D
A sq.
Supply
Airflow
Exhaust
Airflow
Exhaust
Airflow
Supply
Airflow
Exhaust
Airflow
Supply
Airflow
F*
D
B*
C*
D
A sq.
B*
C*
D
A sq.
E
E
E
C*
Supply
Airflow
Exhaust
Airflow