Ear defenders for safety helmets. Adjustable in height. High flexibility ABS arms and cups. Cups padded with synthetic foam. Can be used on their own or with «VISOR HOLDER» faceshield holder. Suitable for GRANITE, SUPER QUARTZ, QUARTZ, ZIRCON and BASEBALL DIAMOND safety helmets.
CE REGULATION (EU) 2016/425 EN352-3:2002 Hearing protection : Ear-Muffs attached to an industrial safety helmet SNR 24 dB Average noise attenuation H 27 High frequency attenuation M 21 Medium frequency attenuation L 14 Low frequency attenuation S/M/L Sizes / Dimensions USA STANDARDS American National Standards Institute ANSI S3.19-1974 American National Standards Institute NRR 21 dB NRR – (Noise Reduction Rating - Noise Reduction Rating)