What are the typical noise reduction ratings (NRR) for earmuffs?

The range of typical noise reduction ratings (NRR) for earmuffs is generally between 15 to 30 dB. This rating indicates how much noise reduction a hearing protection device can provide when appropriately fitted and used. Earmuffs are designed to provide effective attenuation of sound, helping to protect the wearer from exposure to harmful noise levels, which can lead to hearing loss.

When considering this range, it is important to note that the effectiveness of earmuffs can vary based on factors such as design, fit, and the specific noise environment in which they are used. Ratings above 30 dB, while possible for certain high-performance models, are less common and not considered the typical range for most earmuffs on the market. Therefore, 15 to 30 dB represents a realistic expectation for the level of protection that can be anticipated from standard earmuff designs in hearing conservation practices.