3M X4P5E-OR ear defenders 31 dB

These earmuff cups are made of non-conductive (sometimes referred to as “dielectric”) material while the metal components of the headbands and the helmet attachment mechanisms are covered in non-conductive material. This product was found to be electrically insulated, withstanding a voltage up to 1.2 kV, at an external laboratory against a modified test method based on EN 397:2012 under dry conditions. The user must determine the overall suitability of this product for the intended application taking into account any hazards other than noise for which this product is tested and approved. **This product was designed and tested with a 3M Hard Hat H700. For information on other hard hat models contact 3M. ***3M strongly recommends fit testing of hearing protectors. Research suggests that many users will receive less noise reduction than indicated by the NRR due to variation in earmuff fit, earmuff fitting skill and motivation of the user. If NRR is used, 3M recommends that it be reduced by 50% or in accordance with applicable regulations.