Filter – Sundstrom SR518 Gas Filter A2 Threaded for SR 500 Series PAPR Units

Earmuff – Headband 3M Peltor Optime III H540A Blk/Red (CL5 – 33dB)

Earmuff – Cap Attach 3M Peltor Optime III H540P3GS/E Blk/Red (CL5 – 30dB)

Earmuff – Cap Attachable Howard Leight VeriShield VS120 (CL 5 – 28dB)