3M™ Earmuffs, Hearing Conservation 330-3001 Model 1000 24 EA/Cas
Low-profile and lightweight earmuffs may be worn over-the-head, behind-the-head, or under-the-chin. Provides a protective seal without excess pressure while the pivoting earcup connections maintain the seal and proper alignment.
∙ Large earcup openings and soft, foam-filled cushions offer a snug, comfortable fit.
∙ Durable, lightweight construction of non-conductive, dielectric plastic.
∙ Noise Reduction Rating* NRR 20 dB (CSA class B) when the band is worn over-the-head. NRR 22 dB (CSA Class A) when the band is worn under-the-chin. NRR 22 dB (CSA Class B) when band is worn behind-the-head.
*The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.
3M is Leading the Advancement of Hearing Conservation™."