3M E-A-R 33 dB Polyurethane Foam Earplugs Yellow 200 pair VEL-D Maximum Number of Circuits: 40

Maximum Number of Circuits: 40 circuits

Manufacturer Part No: NDP03-4IN-4

UPC: 022624007159

use HTH Spa Test Strips twice a week to test

3M E-A-R 33 dB Polyurethane Foam Earplugs Yellow 200 pair VEL-D Maximum Number of Circuits: 40These corded foam earplugs offer a soft, low pressure solution with a exciting flame graphics. Poly bag keeps earplugs clean and accessible for re use. Regular size fits most earcanals. Noise Reduction Rating (NRR): 33 dB. CSA Class AL. Test compatible with 3M E A Rfit Validation System. The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction