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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)
123456789
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>
1234 678L
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>
1234 678L
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
012345678
0
5
10
15
20
25
30
012345
0
2
4
6
8
10
12
14
90%
80%
70%
60%
Static Pressure (in. wg)
Volume (cfm x 10,000)
3
Volume (m/hr x 10,000)
Static Pressure (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
I
S
S
Y
S
T
E
M
C
U
R
V
E