24
Plenum Size
1FSGPSNBODFDFSUJGJFEJTGPSJOTUBMMBUJPOUZQF"'SFFJOMFU'SFFPVUMFU1PXFSSBUJOHT #IQEPOPUJODMVEFUSBOTNJTTJPOMPTTFT1FSGPSNBODFSBUJOHTEPOPUJODMVEF
the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10
-12
XBUUTDBMDVMBUFEQFS".$"*OUFSOBUJPOBM4UBOEBSE7BMVFTTIPXOBSFGPSJOMFU-
8J
, L
8J
A
and outlet L
8P
, L
8P
A sound power levels for installation type A: Free inlet, Free outlet. The A-weighted sound ratings shown have been calculated per AMCA
International Standard 301. Outlet ratings do not include the effects of duct end correction.
The AMCA International Certified Ratings Seal for Sound for model QEM only applies to the single L
8J
A and L
8P
A values.
CFM
OV
STATIC PRESSURE (in. wg)
1
2
3
4
5
6
7
8
9
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
RPM
#)1
18000
1773
717
4.73
822
8.10
916
11.7
1001
1083
20000
1970
772
871
9.29
13.3
1042
17.3
1117
21.6
1192
22000
2167
828
6.72
922
10.6
1006
14.8
1084
19.3
23.8
28.4
1294
33.3
38.2
24000
2364
886
7.93
12.2
16.6
1129
21.3
1199
26.2
1266
31.1
1328
36.2
1391
41.4
46.8
26000
944
9.29
1029
13.9
18.6
1176
1243
28.8
1307
34.0
1369
39.3
1427
44.8
28000
1004
10.8
1084
20.7
1290
31.4
37.1
1411
42.7
1468
48.4
30000
1063
12.6
1140
17.8
1210
23.1
1338
34.2
1397
40.2
46.3
32000
1124
1197
20.0
1264
1328
31.4
1386
37.3
1444
49.9
62.9
34000
3349
1184
16.7
1320
28.4
1380
1438
40.7
1493
47.1
1648
36000
1246
19.1
1313
1434
37.9
1490
44.3
64.8
1694
72.0
38000
3743
1307
21.7
1372
28.1
1432
34.7
1489
41.4
48.2
1644
62.1
1694
69.4
40000
3940
1369
24.6
1431
31.3
1489
38.3
1647
66.8
RPM
807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1
2
3
4
6
7
8
L
8J
A
100
79
87
76
68
72
62
76
80
77
84
73
63
62
49
71
60
78
83
71
61
48
70
81
79
70
62
60
49
68
700
100
83
84
76
78
74
68
62
84
80
81
91
80
71
70
64
62
79
60
80
90
78
68
67
62
77
80
91
80
68
67
62
60
78
1000
100
86
100
87
83
78
74
94
80
86
93
100
83
79
71
68
92
60
84
93
80
71
68
67
87
84
96
96
80
71
69
67
89
1300
100
93
101
94
93
88
81
98
80
88
91
99
90
89
82
77
94
60
86
89
97
87
77
74
91
86
92
101
87
83
77
76
94
1720
100
98
101
103
99
96
93
89
80
93
97
103
100
91
82
101
60
91
100
98
92
86
82
80
98
90
97
104
100
91
86
82
81
100
RPM
807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1
2
3
4
6
7
8
L
8P
A
100
77
79
78
78
70
66
81
80
76
74
73
66
62
77
60
78
81
73
73
72
63
60
76
80
80
72
73
72
61
700
100
79
92
84
83
78
68
87
80
79
92
83
81
80
72
70
64
84
60
81
89
84
81
79
71
67
63
83
89
91
87
82
74
69
64
87
1000
100
84
92
100
91
87
84
79
97
80
84
90
98
92
87
82
80
94
60
92
90
80
78
72
92
88
98
96
91
87
81
78
73
93
1300
100
92
96
104
102
99
93
90
87
104
80
91
93
102
99
88
84
81
100
60
93
100
92
82
78
97
93
98
102
91
82
77
98
1720
100
97
102
107
109
106
102
97
94
111
80
96
100
104
107
102
97
92
88
107
60
98
102
104
104
99
94
89
86
98
103
107
98
94
89
Plenum Size XX
Plenum Size 36
QEP Class I
Maximum rpm 1047
QEP Class II
Maximum rpm
QEP Class III
Maximum rpm 1720
QEM
Maximum rpm 1229
Note: Model QEM does not utilize class designations.
QEP Motor on Frame Limit
324T
Minimum Motor Size
1
1
⁄
2
[hp]
Wheel Diameter
36.50
927
[in.]
[mm]
Peak Power
(rpm / 401)
3
(rpm / 442)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 10.2
m
3
/s / 5.98
[ft/min]
[m/s]
Tip Speed
rpm x 9.56
rpm x 0.0485
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 0.306)
m
3
/hr / (rpm x 0.520)
[%]
[%]
Imperial data —
Metric data
0
1
2
3
4
5
6
7
8
0
5
10
15
20
25
30
0
1
2
3
4
5
0
2
4
6
8
10
12
14
90%
80%
70%
60%
Static Pr
essur
e (in. wg)
Volume (cfm x 10,000)
3
Volume (m /hr x 10,000)
Static Pr
essur
e (Pa x 100)
15
10
7½
5
3
20
30
40
50
25
75
rpm
hp
% WOV
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
60
100
505
686
864
1047
1173
1229
1365
1570
1720
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
IS
S
Y
S
T
E
M
C
U
R
V
E
