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Sandy741 · July 26, 2014, 10:34 AM

When using two different types of hearing protection, do not add the NRR values. Muffs with 30dB NRR and plugs with 30dB NRR the total protection is 36 db.

July 26, 2014, 10:34 AM	#6
Sandy741 Junior Member Join Date: August 29, 2005 Posts: 10	Questions on Hearing When using two different types of hearing protection, do not add the NRR values. Muffs with 30dB NRR and plugs with 30dB NRR the total protection is 36 db.