LiBBra M Helmet Attachment (10221)

Description

Features:
  • Feather weight earmuff with the measurement that is complying on the users comfort ability
  • Sturdy stainless stell support that last longer than the widely used material in the market
  • ABS grains are the main composition of cups and spring holder which leads to a good items timeline
  • PVC leather are used for the cushion and headband, a quality that can last long
  • A vibrant color code to identify easily the usage level of the earmuffs
  • Adjustable length of the arms of the arch and cup swivel for greater security and comfort

    LiBBra M is best to be use on high noise volume place, such as office and hospital etc.

EN Standard 352-1:2002

Freq.Hz 125 250 500 1k 2k 4k 8k H M L SNR
Mean Value 23.6 22.2 29.2 34.4 31.1 36.6 38.9
1 Std. Dev. 2.6 2.7 3.6 6.1 4.1 3.8 4.6 29 27 23 29
APV 21.0 19.5 25.6 28.3 27.0 32.8 34.3

ANSI S3.19-1974

Freq.Hz 125 250 500 1k 2k 3k 4k 6k 8k NRR
Mean Attenuation 19.4 20.2 29.3 37.8 36.5 35.5 35.6 33.1 35.6
1 Std. Dev. 3.5 2.2 2.7 3.9 4.3 4.5 2.8 2.5 3.7 24

 

LiBBra offers 3 forms of earmuffs: Over the head earmuff, Helmet attachment an Foldable. Each form have levels (Low, Medium & High) that passed ANSI S3.19-1974 and EN Standard 352-1:2002.
Unit/box: 1
Box weight: 0.72 lbs. / 0.33 kg
Box dimensions: 195x95x190 mm / 7.6×3.7×7.5 inch
Box/case: 20
Case weight: 15.8 lbs. / 7.2 kg
Case dimensions: 420x495x400 mm / 16.5×19.5×15.7 inch

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