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B
Headband with foam cushion
MT15H7AWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
Neckband with foam cushion
MT15H7BWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
Helmet attachment with foam cushion on 3M
MT15H7P3EWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
Headband with gel cushion
MT15H7AWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
Neckband with gel cushion
MT15H7BWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
Helmet attachment with gel cushion 3M
MT15H7P3EWS6**
Frequency (Hz)
(B:1)
Mean attenuation (dB)
(B:2)
Std deviation (dB)
(B:3)
125
250
500
18.6
27.4
35.9
4.1
3.3
3.1
125
250
500
17.3
24.3
33.4
4.4
4.6
3.7
H-700 Hard Hat
TM
125
250
500
19.3
25.1
35.0
3.6
2.9
3.1
125
250
500
16.9
22.5
33.4
2.6
2.2
2.5
125
250
500
16.6
22.6
32.3
3.6
2.2
2.4
H-700 Hard Hat
TM
125
250
500
17.5
23.3
34.6
2.6
2.0
3.2
1000
2000
3150
38.9
35.8
37.7
2.9
2.9
3.0
1000
2000
3150
35.9
35.0
37.8
3.0
3.1
2.4
1000
2000
3150
38.7
34.5
35.3
2.1
2.5
2.1
1000
2000
3150
39.9
35.2
37.6
1.8
1.9
1.7
1000
2000
3150
37.7
37.6
38.7
2.4
2.8
2.9
1000
2000
3150
39.2
36.1
38.2
2.8
2.7
2.6
ANSI S3.19-1974
4000
6300
8000
37.0
36.4
38.0
2.4
3.8
5.0
ANSI S3.19-1974
4000
6300
8000
37.0
37.7
39.8
2.6
2,.6
3,9
ANSI S3.19-1974
4000
6300
8000
34.9
36.1
38.5
2.4
2.8
4.1
ANSI S3.19-1974
4000
6300
8000
36.1
36.7
37.5
2.6
1.8
1.7
ANSI S3.19-1974
4000
6300
8000
37.8
39.5
40.3
2.5
2.4
2.0
ANSI S3.19-1974
4000
6300
8000
38.5
38.7
40.0
2.1
1.9
2.5
CSA
NRR
Class
26
A
373 g
CSA
NRR
Class
24
A
357 g
CSA
NRR
Class
26
A
395 g
CSA
NRR
Class
27
A
432 g
CSA
NRR
Class
26
A
425 g
CSA
NRR
Class
27
A
457 g
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