Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, L
RPM
% WOV
1
2
100
66
71
80
63
67
900
60
62
63
50
63
64
100
68
70
80
66
67
1250
60
67
66
50
69
68
100
71
74
80
67
70
1750
60
71
72
50
74
74
100
79
79
80
80
75
2475
60
82
79
50
82
81
100
81
84
80
77
80
3145
60
81
84
50
83
86
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
3145
215T
1/3 hp
.25 kW
20 in.
508 mm
109 kg.
3
1
2
BHP
RPM
BHP
RPM
0.77
1633
1.48
1900
0.89
1688
1.62
1934
1.03
1750
1.78
1987
1.20
1816
1.95
2041
1.39
1887
2.16
2100
1.61
1965
2.39
2163
1.83
2045
2.65
2229
2.06
2128
2.94
2299
2.33
2217
3.27
2377
2.62
2307
3.63
2457
2.93
2398
4.02
2537
3.27
2489
4.45
2623
[dB ref 10
watts]
-12
Wi
3
4
5
6
7
8
L
Wi
71
72
66
64
54
47
72
67
66
63
59
51
42
68
63
63
61
57
50
41
65
63
62
60
57
50
40
65
73
74
71
71
63
55
77
71
72
69
67
60
52
74
68
68
66
64
57
51
71
69
67
65
63
57
51
70
78
77
77
76
77
63
83
77
74
73
72
68
61
79
74
73
72
70
66
60
77
76
74
71
70
65
60
77
81
86
86
84
86
77
92
78
86
84
80
77
71
88
78
83
82
78
75
70
86
80
83
82
78
74
70
86
85
91
91
89
92
87
97
81
86
88
85
83
78
92
83
83
85
83
81
77
90
86
87
85
83
80
77
90
-12
watts, calculated per AMCA Standard 301. Values shown are for inlet L