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The 3M E-A-R UltraFit Corded Earplugs are a pre-molded, no roll , triple-flange earplug that insert easily. They are washable and re-usable, and come in a poly bag.
| FREQ (HZ) | MEAN VALUE dB | STD. DEVIATION dB |
|---|---|---|
| 125 | 28.5 | 4.7 |
| 250 | 30 | 4.6 |
| 500 | 32.9 | 4.6 |
| 1000 | 33.5 | 4 |
| 2000 | 34.9 | 3.6 |
| 3150 | 40.4 | 5.4 |
| 4000 | 41.9 | 5.1 |
| 6300 | 42.7 | 3.3 |
| 8000 | 44.6 | 4.1 |
