3M Aearo Technologies Ear Muff (331-4000)

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Aearo Technologies Ear Muff NRR 27(4000) Product description CAS331-4000 Features: -Model 4000 Earmuff Provides Exceptional Attenuation and Outstanding Comfort.. -One of the lowest priced earmuffs in the industryVertical Adjustment System Large Ear Cup openings provide a custom fit.NRR 27. -Lightweight design and soft, wide cushions ensure even pressure and superior comfort.. -UNSPC CODE: 46181902. Product Type: -Ear Muffs. Type I: -Ear Muffs. Headband: -Yes. Noise Reduction Rating NNR: -27 db. Color: -Blue Show more