LOT #
Noise
Reduction
Rating
12
(WHEN USED AS DIRECTED)
THE RANGE OF NOISE REDUCTION RATINGS
FOR EXISTING HEARING PROTECTORS
IS APPROXIMATELY 0 TO 30
(HIGHER NUMBERS DENOTE GREATER EFFECTIVENESS)
ETYMOTIC RESEARCH, INC.
ELK GROVE VILLAGE, IL 60007
Federal law prohibits
removal of this label
prior to purchase.
LABEL REQUIRED BY
U.S. E.P.A. REGULATION
40 CFR Part 211, Subpart B.
ER-20
EPA
DECIBELS
Safe Exposure
(hours per week)
Sound Level
Exposure
Open
Using
(in dB SPL)
Type
Ears
ER-20s
85
Restaurant
40 hrs
SAFE
94
Subway
5 hrs
SAFE
97
Live band
2.5 hrs
40 hrs
100
Sports event
1.25 hrs
20 hrs
112
Rock concert
5 mins
1.25 hrs
115
Siren
2.5 mins
36 mins
WARNING:
DON'T EXPOSE YOUR EARS BEYOND THE SAFE TIMES SHOWN ABOVE.
EARPLUGS MUST BE INSERTED PROPERLY TO BE EFFECTIVE.
• Music and voices
are clear, not muffled
• Professional quality
Designed by the leaders in
custom hearing protection
1 Pair
NRR:
The government-required labeling of
this product is NRR=12 dB, but actual clinical
measurements of properly inserted ER-20s
indicate that these earplugs provide almost equal
sound reduction (20 dB) across the range of hearing.
E T Y M O T I C R E S E A R C H ,
I N C .
Not Your
Aver
age
Ear
plu
g
ER20-20k-03/04