Noise Reduction Rating (NRR) between 25-27 dB (depending on the attachment type) Low-profile cup design for improved compatibility with other personal protection equipment (PPE) High ratio of NRR to earcup depth. 3M(TM) E-A-Rfit(TM) Dual-Ear Validati
Noise Reduction Rating (NRR) between 25-27 dB (depending on the attachment type) Low-profile cup design for improved compatibility with other personal protection equipment (PPE) High ratio of NRR to earcup depth. 3M(TM) E-A-Rfit(TM) Dual-Ear Validati
X4P3E. Noise Reduction Rating (NRR) between 25-27 dB (depending on the attachment type) Low-profile cup design for improved compatibility with other personal protection equipment (PPE) High ratio of NRR to earcup depth. 3M(TM) E-A-Rfit(TM) Dual-Ear V