Noise reduction rating. NRR 33. Smooth tapered foam. Soft, comfortable fit. Noise Reduction Rating: 33 decibels (when used as directed). The range of noise reduction rating for existing hearing projectors is approximately 0 to 30 (higher numbers denote greater effectiveness). Federal law prohibits removal of the label prior to purchase. Label required by US PEA regulation 40 CFR part 211 subpart B. Information required by EPA: The level of noise entering a person's ear, when a hearing protector is worn as directed, is closely approximated by the difference between the a-weighted environmental noise level and the NRR. Example: (1) The environmental noise level as measured at the ear is 92 dBA. (2) The NRR is 33 decibels (dB). (3) The level of noise entering the ear is approximately equal to [92 dB(A) -33] 59 dB(A).

Quiet Time Ear Plugs 50 Ct - Each

$24.39

Quiet Time Ear Plugs 50 Ct - Each

$24.39

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