27 dB Noise Reduction Rating
The X-Series earmuffs are 3Ms latest advancement in hearing conservation. New technologies in comfort, design and protection all come together in this groundbreaking earmuff line.
With a Noise Reduction Rating of 27 decibels*, the X4A utilizes a newly designed spacer, specially formulated foam liners and innovative ear cushions to help improve attenuation. This lightweight, lower-profile earmuff helps with compatibility with other personal protective equipment and is designed for protection against moderate-to-high level industrial noise and other loud sounds. It features an electrically insulated wire headband.
* Note that the NRR may overestimate the hearing protection provided during typical use.
3M recommends reducing the advertised NRR by 50% for estimating the actual amount of noise reduction provided.