Pyramex Disposable Uncorded Ear Plug 30dB 200 Pair 5AF12BAA PI. Closed cell foam earplugs are resistant to dirt build up. Available in a convenient dispenser box. Uncorded plugs 200 per box / 10 boxes per case. Features of Pyramex DP1200 Disposable Uncorded Ear Plug 30dB 200 Pair: Nrr 30db Expands to fit ear canal. Closed cell foam earplugs are resistant to dirt build up. Available in a convenient dispenser box. Uncorded plugs 200 per box / 10 boxes per case. Package Contents: Pyramex DP1200 Disposable Uncorded Ear Plug 30dB 200 Pair NRR 30dB Expands to fit ear canal. Closed cell foam earplugs are resistant to dirt build up. Available in a convenient dispenser box. Uncorded plugs 200 per box / 10 boxes per case. PIDP1200