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Filtered
Earplugs
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Acoustic
Filtered Earplugs
These specialized patented filters are inserted into a custom
mold to allow safe sounds, those below 80dB like normal conversation,
to pass virtually unattenuated. Yet for sounds higher then 80dB,
these filters act like mini-restrictors and limit the sound
attenuation to OSHA regulated requirements. Best used for industrial
noise and shotgun sports where individuals want to hear some
conversation or audiotory signals coming from machinery.
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Sonic
Valve Earplugs
Sonic Valve hearing protectors are special patented hearing
protection devices designed to allow low level sounds, not harmful
to hearing, to pass through. But offer effective hearing protection
against high level, high impulse noise which are harmful to
hearing. Generally used in aviation, music and sound engineers
to reduce "noise hangovers" and ringing ears.
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