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3M 393-1000 393 1000 E-A-R Fit Ear Plug Testing Kit Hearing ProtectionThe 3M E-A-R Fit Validation System provides a (PAR) Personal Attenuation Rating for each individual worker.Integrating hearing protection fit testing as part of your hearing conservation plan will benefit everyone from high risk workers to new hires. Similar to respiratory fit tests, which will indicate that maximized protection can be obtained only if the perfect fit is attained, 3M's E-A-R fit system will assist you in achieving the optimal fit through proper selection of hearing protection & employee training.

With an NRR(Noise Reduction Rating) of -24dB, this plug reduces ambient noise by up to 42db for clear audio reception in high noise environments.

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