The Portwest PW47 Endurance Clip-On Ear Muffs are economical hard hat mounted ear muffs that are designed to protect your hearing while on the job. Easily clip these ear muffs onto your hard hat for hearing protection that meets ANSI S3.19 standards with a Noise Reduction Rating (NRR) of 24 decibels that also provides an excellent attenuation rate.

• ANSI S3.19 NRR 24dB
• Hard hat mounting ear muff
• Can be adjusted into the stand off position when not in use
• Easy to clip-on
• Compatible with PS55, PW98, PS53, PV60, PV64, PV50, PV54, PS50 hard hats
• Excellent attenuation rate