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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
2189 1042 4.60 7.29 10.2 13.2 16.3
19.4
1614 22.6 1693
16000 1094 1207 1304 11.0 1397 14.2 1484
20.8
1646 24.1 1724 1798 31.0
17000 2481 1149 8.87 12.0 1440
18.8
22.2 1681 29.3 1830 32.9
18000 2627 1204 6.61 1308 9.73 1400 13.0 1484 16.4
20.0
1644 23.8 1720 27.4 1791 31.1 1862 34.8
19000 2773 1260 7.42 10.7 1449 14.1
17.6
1610 21.3 1686 29.1 1829 33.0 1896 36.9
20000 2919 1316 8.30 1410 11.7
1499
18.9
22.7 1728 26.8 1799 30.9 1868 39.0
21000 1373 1462 12.8
1627 20.3 1700 24.2 1771 28.4 1841 32.6 1908 37.0 1973 41.2
22000 3211 1430 10.3
13.9
17.8 1677 21.8 1748 1816 30.0 1884 34.4 39.0 2012
23000
1487 11.4
19.2 1726 23.4 1796 1862 31.9 1927 36.3 1992 41.0
24000
12.6
1623 16.6 1701 20.7 1776 29.3 1910 33.8 1972 38.4 43.1 2096 48.0
3649 1602 13.9 1678 18.0 22.3 1826 26.7 1894 31.2 2018 2079 2139
26000 1660 1734 19.6 23.9 1877 1944 33.2 2007 37.9 2066 42.7 2123 47.7
RPM 807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1234 678L
8J
A
600
100 77 89 77 70 69 77
80 76 86 74 67 64 73
60 83 84 76 67 61 48 43 72
83 84 76 67 61 48 43 72
800
100 78 86 88 78 72 66 83
80 78 89 86 74 70 66 60 81
60 78 84 81 71 67 63 76
77 84 81 71 67 63 76
1100
100 81 89 97 83 80 68 91
80 79 88 82 78 70 88
60 77 90 77 74 71 68 83
76 83 88 74 72 70 68 66 81
100 87 91 97 97 92 89 84 80 98
80 84 88 93 93 87 84 79 74 94
60 90 92 89 82 79 76 74 90
91 91 87 80 78 74 89
2144
100 99 102 106 102 98 94 90 107
80 91 99 102 98 93 89 84 103
60 92 97 100 99 93 88 82 100
91 97 100 98 91 86 84 82 99
RPM 807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1234 678L
8P
A
600
100 81 88 79 76 71 61 80
80 81 84 77 74 71 63 76
60 81 84 72 70 63
80 84 72 71 70 64 74
800
100 79 87 90 81 77 71 62 87
80 78 87 87 82 77 72 60 83
60 81 84 80 69 63 81
81 83 79 74 69 66 81
1100
100 84 91 101 94 90 86 80 73 97
80 81 89 97 90 86 81 70 93
60 83 88 93 86 82 77 73 70 89
83 87 90 83 80 76 72 70 87
100 89 94 101 103 99 94 90 86 104
80 88 92 99 100 89 83 79 100
60 92 94 94 94 90 84 80 78
94 96 93 92 87 82 79 78 93
2144
100 97 101 106 111 109 100 96 113
80 100 104 109 106 100 94 89 110
60 99 103 103 103 100 90 86 104
102 103 101 98 93 89 86 103
Plenum Size 30
QEP Class I Maximum rpm
QEP Class II Maximum rpm 1702
QEP Class III Maximum rpm 2144
QEM Maximum rpm
Note: Model QEM does not utilize class designations.
QEP Motor on Frame Limit 284T
Minimum Motor Size 3/4 [hp]
Wheel Diameter
30.00
762
[in.]
[mm]
Peak Power
(rpm / 569)
3
(rpm / 627)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 6.86
m
3
/s / 4.04
[ft/min]
[m/s]
Tip Speed
rpm x 7.85
rpm x 0.0399
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 0.165)
m
3
/hr / (rpm x 0.280)
[%]
[%]
Imperial data — Metric data
0123456
0
5
10
15
20
25
30
0 1234
0
2
4
6
8
10
12
14
90%
80%
70%
60%
Static Pressure (in. wg)
Volume (cfm x 10,000)
/hr 10,000)
Static Pressure (Pa x 100)
rpm
hp
% WOV
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
Volume (m
15
10
7½
5
3
2
1½
20
30
25
40
50
60
651
821
1114
1305
1532
1702
1946
2144
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
3
22
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.