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3M Peltor X-Series Over-The-Head Earmuffs, NRR 31 dB, One Size Fits Most, Black X5A (Pack of 1) : Amazon.com.au: Home Improvement
3M™ X5A Peltor™ X5 Series Over-The-Head Safety Ear Muff/ Earmuff/ Highest NRR
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SENSGARD HEAR SMARTER NRR-31-BLACK | Shotgun Sports Magazine
Decibullz Custom Molded Earplugs Highest 31dB NRR Hearing Protection - Body Logic
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Howard Leight LM-777 Earmuff, NRR 31, Black from Cole-Parmer Canada
NRR Rating - Custom Protect EarCustom Protect Ear
SensGard - Advanced Lightweight Hearing Protection
3M™ PELTOR™ X5 Earmuffs X5B, Behind-the-Head, 10 EA/Case | 3M United States
What Is the Noise Reduction Rating (NRR) and How to Use It? - NoisyWorld
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3M Personal Protective Equipment Standard Nrr 31 Db, Black, One Size Fits Most: Safety Ear Muffs: Amazon.com: Tools & Home Improvement
SensGard NRR 31 Hearing Protectors - Lee Valley Tools
3M Peltor X-Series Over-The-Head Earmuffs, NRR 31 dB, One Size Fits Most, Black X5A (Pack of 1) : Amazon.com.au: Home Improvement
