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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
8000 1087 2.08 1389 6.88 1644 8.62
9000 1969 1180 1329 4.18 1463 7.81 1703 9.68 11.6
10000 2188 3.07 1418 4.86 6.77 8.82 1770 10.8 1873 12.9 1976 2073 17.3
11000 2407 1373 3.69 7.66 1737 9.82 1841 12.1
1942 14.3
2036 16.6 2131 18.9 2221 21.3
12000 1474 4.41 1601 6.49 1714 8.66 1817 10.9
1918 13.3
2013
2106 18.2 2193 20.7 2280 23.2
13000 2844 7.44 9.78
1903 12.2
1997 14.7
2090 17.3 2178 20.0 2264 22.6
14000 3063 1681 6.17 1790
1896 11.0
1992
2081 16.2 2169 18.9 21.8 2336 24.7 2416
3282 7.23
1886 9.71
1989 12.3
2083 2169 17.8 20.6 2333 23.6 2413 26.6 2489 29.8
16000
1890 8.42
1986 11.0
2083 13.8 2174 16.7 19.6 2338 2414 2491 28.7 32.0
17000 3719
1996 9.74
2088 2178 2267 18.4 2349 2427 24.6 27.7 31.0 34.4
18000 3938 2103 11.2 2191 14.1 2274 17.1 2360 20.3 2441 26.8 30.1 33.4 2726 36.9
19000 2210 12.8 2294 2372 19.1 22.3 2608 29.2 2679 32.6
RPM 807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1234 678L
8J
A
100 71 87 79 69 67 68 76
80 71 83 76 66 64 72
60 81 82 78 67 61 49 43 72
81 82 78 67 61 49 43 72
1000
100 80 91 78 74 72 67 60 84
80 72 86 90 70 68 60 83
60 73 83 84 71 66 64 78
72 82 71 66 64 78
1400
100 79 83 98 83 81 76 70 92
80 76 81 97 82 78 76 70 66 90
60 79 92 77 73 72 68
74 78 90 71 70 67 66 82
2000
100 88 88 100 94 91 86 82 100
80 84 86 91 96 89 86 80 76 96
60 83 89 92 94 83 81 77 93
82 90 93 92 81 79 76 91
2744
100 93 97 100 103 99 91 107
80 89 93 96 102 99 94 90 103
60 89 98 100 89 82 100
88 99 99 93 87 84 82 99
RPM 807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1234 678L
8P
A
100 76 78 74 74 74 62 80
80 79 82 76 73 72 64 76
60 78 81 74 71 71 64
77 82 72 69 70 64 74
1000
100 83 90 81 78 73 63 87
80 73 84 87 82 77 73 60 84
60 77 84 80 70 64 62 82
78 83 80 74 69 64 64 81
1400
100 82 84 101 94 91 86 82 74 97
80 79 83 98 90 87 82 76 70 93
60 81 83 93 83 78 73 70 89
82 83 91 83 81 77 71 70 87
2000
100 89 91 98 102 96 91 88 106
80 88 90 102 97 92 81 102
60 91 94 94 96 92 86 81 79 97
94 96 93 90 84 80 78
2744
100 94 99 102 110 110 106 101 96 113
80 93 98 101 108 107 101 96 90 110
60 97 101 102 102 101 96 91 87
100 104 104 100 98 94 89 86 103
Plenum Size 24
QEP Class I Maximum rpm 1670
QEP Class II Maximum rpm 2178
QEP Class III Maximum rpm 2744
QEM Maximum rpm 1960
Note: Model QEM does not utilize class designations.
QEP Motor on Frame Limit 256T
Minimum Motor Size 3/4 [hp]
Wheel Diameter
24.50
622
[in.]
[mm]
Peak Power
(rpm / 798)
3
(rpm / 880)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 4.58
m
3
/s / 2.69
[ft/min]
[m/s]
Tip Speed
rpm x 6.41
rpm x 0.0326
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 0.0896)
m
3
/hr / (rpm x 0.152)
[%]
[%]
Imperial data — Metric data
0 5 10 15 20 25
0
2
4
6
8
10
12
14
Volume (cfm x 1000)
Volume (m
3
/hr x 1000)
90%
80%
70%
60%
2
3
5
7½
10
15
20
25
30
50
60
1005
1365
1670
1960
2178
2744
2480
Static Pressure (in. wg)
Static Pressure (Pa x 100)
D
O
N
O
T
S
E
LE
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
rpm
hp
% WOV
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
0 5 10 15 20 25 30 35 40
0
5
10
15
20
25
30
20
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.