https://www.mccoys.com/shop/p/8854416-052303-31/oregon-563475-ear-muffs-27-db-nrr
563475 Ear Muffs, 27 dB NRR
Sku: 8854416-052303-31
$17.29 / Card
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Comfortable hearing protection with sliding earmuff caps and an easy to adjust headband. NPR 27 dB (noise reducing rating), testing according to ANSI S12.42-2010.
Noise Reduction Rate (NRR)
27