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 L is best to be use on high noise volume place, such as home DIY, carpentry and etc.
EN Standard 352-1:2002
| Freq.Hz |
125 |
250 |
500 |
1k |
2k |
4k |
8k |
H |
M |
L |
SNR |
| Mean Value |
15.6 |
18.6 |
27.5 |
36.0 |
34.4 |
28.4 |
31.8 |
|
|
|
|
| 1 Std. Dev. |
3.6 |
2.1 |
3.2 |
3.2 |
2.9 |
1.9 |
3.8 |
29 |
26 |
19 |
28 |
| APV |
12.0 |
16.5 |
24.3 |
32.7 |
31.4 |
26.5 |
28.0 |
|
|
|
|
ANSI S3.19-1974
| Freq.Hz |
125 |
250 |
500 |
1k |
2k |
3k |
4k |
6k |
8k |
NRR |
| Mean Attenuation |
16.2 |
18.3 |
28.6 |
38.3 |
35.6 |
31.8 |
31.0 |
30.4 |
32.1 |
|
| 1 Std. Dev. |
2.8 |
2.0 |
2.5 |
2.8 |
3.2 |
2.6 |
2.8 |
2.9 |
2.9 |
23 |
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 / 7.6x3.7x7.5 inch
Box/case: 20
Case weight: 15.8 lbs. / 7.2 kg
Case dimensions: 420x495x400 mm / 16.5x19.5x15.7 inch
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