Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, L
RPM
% WOV
1
2
100
82
73
80
79
70
350
60
77
68
50
75
67
100
87
84
80
83
80
500
60
80
77
50
81
77
100
85
93
80
82
90
700
60
80
87
50
84
88
100
89
96
80
85
93
1000
60
85
90
50
87
89
100
93
97
104 101
80
89
92
1251
60
90
91
50
93
93
Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10
L
A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
Wo
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to L
A and L
Wi
Wo
1251
364T
7
⁄
hp
5.5 kW
1
2
49 in.
1245 mm
862 kg.
3
1
2
BHP
RPM
BHP
RPM
4.06
649
7.91
754
4.70
675
8.71
772
5.45
705
9.61
794
6.31
739
10.7
819
7.29
773
11.8
849
8.40
808
13.1
881
9.65
846
14.6
915
11.0
884
16.2
949
12.6
923
17.9
984
14.3
963
19.8
1022
16.2
1003
21.9
1060
18.2
1046
24.2
1099
[dB ref 10
watts]
-12
Wi
3
4
5
6
7
8
L
Wi
69
69
68
58
49
42
72
67
67
64
55
46
38
68
64
66
63
54
46
38
67
63
65
63
54
46
38
66
78
77
77
75
60
54
81
75
74
73
65
56
49
76
72
73
72
64
56
50
75
72
72
72
63
55
50
75
86
85
84
85
73
64
90
84
83
80
75
67
60
85
80
80
78
74
67
61
82
80
79
77
72
66
62
82
98
95
92
92
90
74
99
95
92
88
84
79
70
94
92
89
86
82
77
71
91
90
88
85
81
77
72
90
97
96
99
83
105
99
99
94
90
87
78
100
95
95
91
88
84
78
97
95
94
90
88
84
79
96
-12
watts, calculated per AMCA Standard 301. Values shown are for inlet L