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The SHK-1 Full Brim Non-Vented is a Class E
A universal hole pattern ensures compatibility with most standard cap and hat brackets
The SHK-1 Full Brim Vented is a Class C
⚠️ California Proposition 65 Warning: This product contains chemicals
Perfect Fit System Front and rear dial adjustment fits head sizes from 53–63 cm
Universal Ear Defender helmet The SHK-1 Full Brim Non-VentedSerious Noise. Serious Protection. Job sites are loud. The ED 3B is built to handle it. These passive helmet mounted ear defenders deliver NRR 26 dB noise reduction and integrate directly with most Type I and Type II industrial safety helmets via a universal 30mm blade mount. No separate headband. No fumbling. Hearing protection that stays out of your way until you need it and locks in place when you do. Why the ED 3B Three Positions. One Smooth