Filter – Sundstrom SR518 Gas Filter A2 Threaded for SR 500 Series PAPR Units
Can only be used in with the SR500
Earmuff – Neckband 3M Peltor Optime III H540B Blk/Red (CL5 – 34dB)
Earmuff – Headband Howard Leight VeriShield VS120 Folding (CL 5 – 31dB)
Earmuff – Cap Attach 3M Peltor X4P3G/E Hi Vis Green/Black (Class 5 – 28dB)