CSA Class BL 20dB NRR When Band Is Worn Under Chin 17dB NRR When Band Is Worn On Back Of Head 2-7 Day Shipping Free Shipping On Orders Over $79 Caboflex Earplug Information The 3M E-A-R Caboflex Earplugs (7000002297) are uncorded disposable earplugs designed to be worn under the chin for easy removal. These earplugs can be easily worn with hard hats, making them suitable for applications such as grinding, machine operation, welding, assembly, facility maintenance, blasting, electrical, painting, sanding, demolition, cleaning, etc. The Noise Reduction Rating (NRR) changes depending on the position. 20 dB when the band is worn under the chin. 17 dB when the band is worn behind the head. CSA Class BL.
