COMPOSITION
Cup & headband: ABS.
Cushion: Foam & PVC.
Norms
USA STANDARDS
-ANSI S3.19-1974 : American National Standards Institute
-NRR – (Noise Reduction Rating - Noise Reduction Rating) : NRR 21 dB
Certif. S mark Resolution 896/99
-EN352-3 : Hearing protection : Ear-Muffs attached to an industrial safety helmet
-Average noise attenuation : SNR 27,3 dB
-High frequency attenuation : H 30,7 dB
-Medium frequency attenuation : M 25,2 dB
-Low frequency attenuation : L 16,6 dB
REGULATION (EU) 2016/425
-EN352-3:2002 : Hearing protection : Ear-Muffs attached to an industrial safety helmet
-Average noise attenuation : SNR 24 dB
-High frequency attenuation : H 27
-Medium frequency attenuation : M 21
-Low frequency attenuation : L 14
-Sizes / Dimensions : S/M/L