These ear muffs passively block noise by relying on the insulating materials of the ear cups to dampen sound. They're typically worn in areas where workers don't need to speak with one another and the goal is to block all or most surrounding noise.
| Manufacturer | Mine Safety Appliances |
|---|---|
| Noise Reduction Rating | 23 dB, 24 dB, 25 dB |
| Features | Precise fit provides maximum loud noise protection using minimal cup size; Available in low, medium, and high attenuation |
| Details | For use with MSA slotted caps For use in high-noise environments, such as paper mills, foundries, mines and airports; Cups are sized and shaped to provide space for most ear sizes |