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"Your Hearing is Our Concern" |
HEARING HEALTHCARE CENTERS HOLDEN HEARING AID CENTER |
Stock Products |
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Hearing Protection Devices (HPD's) are rated to indicate the average amount of sound attenuation. The Noise Reduction Rating, or NRR should be high enough to reduce the sound you're exposed to below 90 decibels (dB). For example, if you're using a power tool that produces 110 dB, you should choose HPD's with an NRR of at least 20 dB.
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