product description
• The HP431 ear muff offers our highest NRR rating (31 dB)
• Ideal for work in very high noise environments
• Independently tested/certified to NRR 31 (ANSI S3.19)
• CSA Class A
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• The HP431 ear muff offers our highest NRR rating (31 dB)
• Ideal for work in very high noise environments
• Independently tested/certified to NRR 31 (ANSI S3.19)
• CSA Class A