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Hearos Xtreme Protection, 14-Pair Foam (Pack of 3)
4.00 / 5 based on 1 Review
Xtreme Protection Series Xtremely Soft Foam Highest NRR 33dB 14 Pair Noise Reduction Rating - 33 Decibels Tested according to ANSI Specs S3.19-1974 The level of noise entering a person s ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR Example: The environmental noise level as measured at the ear is 92 decibels db . The NRR us 33 decibeks The level of the noise entering the ear is approximately 59 dB . see more...