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Howard Leight Single-Use MAX Disposable Earplugs are made of polyurethane foam, disposable, noise-blocking. They have a contoured bell shape for user comfort, while resisting backing out. They have a soil-resistant closed-cell foam skin which prevents dirt build-up and are available both corded and un-corded.
| FREQ (HZ) | MEAN VALUE dB | STD. DEVIATION dB |
|---|---|---|
| 125 | 29.4 | 9.4 |
| 250 | 29 | 9.7 |
| 500 | 30.1 | 9.5 |
| 1000 | 30.2 | 7.7 |
| 2000 | 33.2 | 4.7 |
| 4000 | 42.8 | 5.1 |
| 8000 | 42.7 | 6.9 |
