Aearo Peltor H9 Series Earmuffs with Headband- The H9 series is a lightweight, mid-range earmuff. It utilizes individual stainless spring steel headband wires and two low tension points for even, comfortable alignment to the head. The broad foam cushions give low comfortable surface pressure. It also features pressure equalization air openings, which quickly ensure the correct pressure to the eardum. It is suitable for factories, sheet metal workers, schools, printing operations, textile industries, power equipment, ect. NRR 25 is the Noise Reduction Rating in decibels(dB) ANSI S3.19-1974/CSA Z94.2.ear hearing protection
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