Noise Blocking Earmuffs
Howard Leight by Honeywell
Brand formerly known as
Army – Defence
Automotive and Part Manufacturer
Building and Construction
Energy or Electricity
Fire Protection brigades
Iron and steel industry
Medical and Pharmaceutical
Minning and Quarrying
Noise Blocking Earmuff
AIR FLOW CONTROL™ TECHNOLOGY Bilsom’s patented Air Flow Control™ technology delivers optimal attenuation across all frequencies, without increasing earcup size or weight. A patented baseplate chamber and high-tech non-woven layer manage the flow of air inside the earmuff to control how sound reaches the ear. The result is better, more consistent overall attenuation for virtually all industrial noise environments. Air Flow Control is a standard feature on all Thunder series earmuffs. DIELECTRIC/PLASTIC CONSTRUCTION Thunder’s robust nondeforming dielectric construction withstands use and abuse, while protecting your workers in electrical environments. NON-DEFORMING OUTER HEADBAND Thunder’s non-deforming outer headband provides better comfort, minimizes pressure on head, withstanding rough treatment in the toughtest workplaces. INNER-VENTILATED HEADBAND Provides better positioning, minimizes pressure on the head. Soft, comfortable contact surface breathes easier in warm/humid climates. QUICK CLICK HEIGHT ADJUSTMENT Height adjustment remains fixed during wear. SNAP-IN EAR CUSHIONS Make replacement quick and easy.
When it comes to selecting an earmuff, comfort reigns supreme with workers. That’s why the Thunder series earmuff is designed with all-day comfort in mind. Headband earmuffs feature a unique dual-headband for better positioning and breathability, and non-deforming outer headband that minimizes pressure on the head. Plus, its dielectric construction withstands use and abuse, while protecting workers in electrical environments.
EC Category PPE
ISO 9001 / 2000
EC Certificate Number
EC Attestation Number
Frequency (Hz) Frequenz (Hz) Fréquence (Hz) 63 125 250 500 1000 2000 4000 8000
Mean Attenuation (dB) Mittlere Dämmung (dB) Atténuation moyenne (dB) 20.3 20.5 28.0 31.9 38.5 37.1 37.6 38.0
Standard Deviation (dB) Standardabweichung (dB) Déviation standard (dB) 4.2 3.6 2.8 3.5 2.7 3.4 3.1 5.2
Assumed Protection (dB) Angenommener (dB) Protection supposée (dB) 16.1 16.9 25.2 28.4 35.8 33.7 34.5 32.8
Plastic [or Dielectric]
POM, LDPE, PC/PBT, PP, PUR-E, PVC
Black and Dark Green
Air Flow Control™
Automatic Shut-Off Function
Audio Input Jack
Cushions should be replaced periodically to retain maximum attenuation. Use the following as a guideline for replacement of ear cushions and insert foam. General use and wear – Ear cushions and foam inserts should be replaced at least every 6 months. Heavy use or wear in humid/extreme climates – Ear cushions and foam inserts should be replaced at least every 3 months. Cracking or leakage is visible – replace ear cushions and foam inserts immediately.
When not in use, the earmuffs should be stored in a clean dry container or locker. Do not use solvents or petroleum-based products. Do not immerse the earmuffs in water.
Earmuffs are an important safety product and should be inspected regularly. Its use, care and maintenance are critical to its effective performance. Earmuffs and in particular ear cushions may deteriorate with use and should be examined at frequent intervals for cracking and leakage. If the ear cushions become hard, damaged or deteriorated, they should be replaced promptly using recommended Hygiene Kits. Earmuffs should be maintained by regular cleaning. Use a mild disinfectant solution. A gentle wipe is all that is required.