For noise levels up to 105 dBA, these cap attached with double-shell technology to provide effective hearing protection. Proprietary Twin-Cup(TM) design has soft, foam-filled earmuffs. Easy cap-mount design. Earcup pivot points that tilt for optimum comfort and efficiency. Liquid/foam filled earmuff cushions. Color-coding to help match attenuation needs. Noise Reduction Rating (NRR)*: 27 dB. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.
- For noise levels up to 105 dBA.
- Easy cap-mount design.
- Liquid/foam filled earmuff cushions.
- Noise Reduction Rating (NRR)*: 27dB. CSA Class AL.