- Xtremely high
- NRR 33
Xtremely High NRR 33
Noise Reduction Rating 33 Decibels (when used as directed). The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness.
Tested according to ANSI Specs S3.19-1974
The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Attenuation Chart (ANSI S3.19-1974)
|Mean Attenuation (dB)||38.4||40.3||43.2||41.8||38.6||45.0||45.7||49.6||47.3|
|Standard Deviation (dB)||2.9||3.5||4.0||3.8||2.6||2.8||3.5||3.8||4.3|
- The environmental noise level as measured at the ear is 92 decibels dB(A).
- The NRR is 33 decibels (dB).
- The level of noise entering the ear is approximately 59 dB(A).
Made in USA
Ear plugs must be inserted for optimum performance.
- With clean hands, firmly roll entire ear plug between thumb and fingers to form a thin tight cylinder.
- Using one hand, gently lift top of ear up to open ear canal. With other hand, insert rounded end of ear plug.
- With forefinger, hold ear plug in place until it expands to form a comfortable, snug fit.
Practice of insertion is recommended. Discard product after several uses or as soon as dirt or wax accumulates on ear plugs.© DAP World, Inc.
Keep away from infants. This product is non-toxic but may interfere with breathing if caught in windpipe.
For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the instructions for proper fit. Although hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continuous noise and may not be an accurate indicator of the protection attainable against impulsive noise such as gunfire. The Noise Reduction Rating (NRR) calculated from the attenuation data is 33dB. Ear plugs must be properly fitted to attenuate noise effectively. Refer to instructions.
This product has no shipping restrictions.
Shipping Weight (in lbs): 0.26
Product in inches (LxWxH): 2.25x 3.38x 5.25
Item Code: 917126
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