A) STANDARD EN 352-1:2020
3M strongly recommends personal fit testing of hearing protectors. Research suggests that users may receive less noise
reduction than indicated by the attenuation label value(s) on the packaging due to variation in fit, fitting skill, and motivation
of the user. Refer to applicable regulations and guidance on how to adjust attenuation label value(s). In the absence of
applicable regulations, it is recommended that the attenuation label value(s).be reduced to better estimate typical
protection.
A:A Headband earmuff with foam cushions
MT73H7A4D10EU, MT73H7A4D10EU GB
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:6: S, M, L
A:B Folding headband earmuff with foam cushions
MT73H7F4D10EU-50
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:6: L
A:C Neckband earmuff with foam cushions
MT73H7B4D10EU, MT73H7B4D10EU GB, MT73H7B4D10EU-50
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:6: S, M, L
A) STANDARD EN 352-3:2020
A:D Carrier attachment earmuff with foam cushions
MT73H7P3E4D10EU, MT73H7P3E4D10EU GB, MT73H7P3E4D10EU-50
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:1 f (Hz)
125
250
500 1000 2000 4000 8000
19.3 25.0 34.8 37.4 36.1 40.4
2.5
1.9
2.6
3.5
16,8 23.1 32.2 33.9 32.4 38.0
A:1 f (Hz)
125
250
500 1000 2000 4000 8000
18.6 24.3 33.6 36.8 35.5 39.4
2.9
2.4
2.4
3.4
15.7 21.9 31.2 33.4 32.6 36.9
A:1 f (Hz)
125
250
500 1000 2000 4000 8000
17.7 23.9 32.5 36.2 35.6 39.5
2.8
3.1
3.9
3.1
14.9 20.8 28.6 33.1 33.1 36.6
A:1 f (Hz)
125
250
500 1000 2000 4000 8000
18.1 23.2 32.0 36.4 34.2 40.2
3.3
1.8
3.4
2.7
14.8 21.4 28.6 33.7 32.3 37.7
H
36.4
37.1
3.7
2.4
4.0
3.0
32.4
34
H
35.5
36.4
2.9
2.5
3.4
2.3
32.1
34
H
37.1
36.9
2.5
2.9
2.3
2.3
34.8
35
H
34.5
35.6
1.9
2.5
4.6
2.3
29.9
33
A:5
M
L
SNR
33.7
26.4
35.1
1.5
1.4
1.7
490 g
32
25
33
A:5
M
L
SNR
32.9
25.7
34.4
1.5
2.1
1.5
521 g
31
24
33
A:5
M
L
SNR
32.4
25.0
34.2
2.3
2.6
2.1
475 g
30
22
32
A:5
M
L
SNR
31.9
24.8
33.4
1.6
2.0
1.6
512 g
30
23
32