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- Noise Reduction Rating - NRR 33
- Smooth, Tapered Foam for a Soft, Comfortable Fit
- EPA
PROTECHS Ear Plugs for WORK are tapered for comfort and help block the sounds of power tools and lawn equipment. Heavy-duty protection for tough jobs. The highest independently tested NRR provides serious protection suitable for most noisy environments, while the tapered shape seals gently and snugly without pressure. Extra-soft, extra-light foam for a comfortable fit; shaped to fit even very small ear canals; non-irritating smooth surface.
Information required by EPA: The level of noise entering a persons 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:
- The environmental noise level as measured at the ear is 92 dBA.
- The NRR is 33 decibels (dB).
- The level of noise entering the ear is approximately equal to [92 dB(A) - 33] 59 dB(A).
Noise Reduction Rating 33 Decibels (When used as Directed)
The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness).