NRR - Noise Reduction Rating, 3M
3M 318-1000 E-A-R Push-Ins™ Earplugs, Uncorded, Poly Bag, 100/pr
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- Polybag keeps each earplug clean before use.
- Vivid blue stem makes insertion & removal cleaner and easier.
- Test Compatible with 3M™ E-A-Rift™ Validation System
- Noise Reduction Rating (NRR) 28 dB.
- CSA Class AL.
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