3M 31025 3M E-A-R Earmuffs 331-4000

3M 31025 3M E-A-R Earmuffs 331-4000

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FEATURES: • Vertical adjustment system for quick and easy fitting • Large earcup openings to fit most ear sizes • Soft, wide cushions for even pressure and extra comfort • Noise Reduction Rating (NRR)* 27 dB. CSA Class A SPECIFICATIONS: • Noise Reduction Rating (NRR): 27 dB • Cup Material: ABS • Cup Color: Black / Blue • Standards Met: CSA Class A • Package Quantity: 20 per case EAR Model 4000, Earmuff, 20 ea/case. Outstanding comfort and protection at a budget-conscious price. The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation(TM).

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