3M Earmuff Peltor H7B

For noise levels up to 101 dBA Stainless steel band distributes weight for low-pressure fit Noise Reduction Rating (NRRA Class A.)*: 26 dB. CS The NRR may overestimate the hearing protection provided during typical use Noise Reduction Rating (NRR)*: 26 dB. CSA Class A. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50 percent for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation For industrial/occupational use only. Not for consumer sale or use.