HIGH STATIC | 55
Ducted High Static
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DUCTED HIGH STATIC
Acoustic Data
Sound Pressure Data for M3 Units
Model
Rating
Fan
speed E.S.P
RPM
CFM
Sound pressure level, Lp (dB one reference picopascals)
63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz
ARNU543M3A4
RETURN OPENING
H
0.20
970
1720
31
39
41
44
44
36
31
25
M
920
1558
30
39
40
43
43
35
31
24
L
880
1424
30
37
38
41
40
32
27
19
CASING RADIATED
H
970
1720
26
36
38
39
36
32
21
20
M
920
1558
26
35
38
38
35
31
26
17
L
880
1424
28
33
34
36
33
28
23
15
DUCTED DISCHARGE
H
970
1720
39
38
43
48
47
42
39
35
M
920
1558
38
37
43
47
47
41
39
34
L
880
1424
39
34
41
44
43
38
35
29
ARNU483M3A4
RETURN OPENING
H
0.20
890
1457
30
37
38
41
40
33
28
20
M
820
1189
28
35
36
39
38
30
25
17
L
760
952
25
32
34
37
36
28
23
15
CASING RADIATED
H
890
1457
28
33
34
36
33
29
23
22
M
820
1189
26
31
32
34
31
27
22
13
L
760
952
24
29
30
32
29
25
20
11
DUCTED DISCHARGE
H
890
1457
40
35
42
45
44
38
35
30
M
820
1189
37
32
39
42
41
35
32
27
L
760
952
34
29
36
39
38
33
30
24
ARNU423M3A4
RETURN OPENING
H
0.20
850
1327
29
36
37
40
39
32
27
19
M
800
1097
27
34
35
38
37
30
25
17
L
760
952
26
33
34
37
36
28
23
15
CASING RADIATED
H
850
1327
27
32
33
35
32
28
22
21
M
800
1097
26
31
32
34
31
26
21
13
L
760
952
25
30
31
33
29
25
20
11
DUCTED DISCHARGE
H
850
1327
38
34
40
43
42
37
34
28
M
800
1097
36
31
38
41
40
35
32
26
L
760
952
34
30
36
40
38
33
30
24
ARNU363M3A4
RETURN OPENING
H
0.20
850
1327
29
36
37
41
40
32
27
19
M
800
1097
28
35
36
39
38
30
25
17
L
760
952
26
33
34
37
36
29
24
16
CASING RADIATED
H
850
1327
28
32
34
35
32
28
22
21
M
800
1097
26
31
32
34
31
27
22
13
L
760
952
25
30
31
33
30
26
21
12
DUCTED DISCHARGE
H
850
1327
39
34
41
44
43
37
34
29
M
800
1097
37
32
38
42
40
35
32
26
L
760
952
35
30
37
40
39
33
30
25
ARNU283M3A4
RETURN OPENING
H
0.20
830
1235
29
36
37
40
39
32
27
19
M
790
1060
28
35
36
39
38
30
25
17
L
750
915
26
33
34
37
36
29
24
16
CASING RADIATED
H
830
1235
27
32
34
35
32
28
22
21
M
790
1060
26
31
32
34
31
27
22
13
L
750
915
25
30
31
33
30
26
21
12
DUCTED DISCHARGE
H
830
1235
38
34
40
43
42
37
34
28
M
790
1060
37
32
39
42
41
35
32
27
L
750
915
35
30
37
40
39
33
31
25