3M E-A-R Classic Plus Earplugs, 311-1105, corded, 2000 pairs per case Constructed from slow-recovery foam, the disposable earplug conforms to the shape of the ear canal for premium hearing protection. Product Information Brand 3M Part # 7000127207 Line E-A-Rsoft Origin Country USA Product Type Corded Ear Plugs Size Large Product Information*U.SEPA specifies the NRR as the measure of hearing protector noise reductionHowever, 3M makes no warranties as to the suitability of the NRR for this purpose3M strongly recommends personal fit testing of hearing protectorsResearch suggests that users may receive less noise reduction than indicated by the attenuation label value(s) on the packaging due to variation in fit, fitting skill, and motivation of the userRefer to applicable regulations or guidance on how to adjust attenuation label valuesIt is recommended that the NRR be reduced by 50% to better estimate typical protection.CSA Class ALCylindrical shape creates a snug seal for noise reductionFeatures a Noise Reduction Rating (NRR)* of 29 dBNoise Reduction Rating (NRR)*:33 dBCSA Class ALOne size fits mostPillow pack option for storage of earplugs between usesTest compatible with 3M E-A-Rfit Validation System
