Name: Mk 4 Protective Ear Plugs
Brand: ALVIS
Price: 34.99 GBP
Availability: OnlineOnly
Rating: 4.2 (50 reviews)

Noise attenuation

Enhanced noise attenuation on higher frequencies (the most harmful) and the shut-off valve offers 2 noise attenuation levels (high and very high): -low protection in calm surroundings (4dB at 80dB noise). -moderate attenuation for medium noise (24dB at 100dB). -high attenuation for high noise (39dB at 120 dB).

Product details according to the manufacturer

MK 4 earplugs comply with CE standards for PPE in accordance with the EN 352-2 - 2002 standard. Noise attenuation values tested according to standard EN 352-2: 2002 of directive 89/686/EEC (These values give the attenuation level for constant noise levels): ALVIS MK4 closed NRR: 27 H: 28 M: 24 L: 24. ALVIS Mk4 open SNR: 19 H: 22 M: 16 L: 11**.

2 positions

Open: the progressive filter reduces noise according to its loudness. Accurate and normal hearing in quiet conditions and protection in a noisy environment. Closed: occlusive and watertight ear plug.

Size

Available in two sizes M and L.

frequency	occasional, regular
place of practice	indoor, outdoor
protection type	passive
condition	new

frequency	occasional, regular
place of practice	indoor, outdoor
protection type	passive
condition	new

frequency	occasional, regular
place of practice	indoor, outdoor
protection type	passive
condition	new

Mk 4 Protective Ear Plugs

Features

Design benefits

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Usage & care

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