Single or Twin port adapter snaps into place to cover a wide variety of respiratory applications, the APR adapter works with both NFPA and Industrial G1 facepieces, making the G1 facepiece platform ideal for industrial respiratory needs. The twin cartridge adapter can be used with the full line of both Advantage and Comfo style respirator cartridges. The single port adapter can be used for industrial gas mask canisters and NFPA version facepieces can be adapted for CBRN APR protection. G1 NFPA Facepieces are available with Rubber or Kevlar harnesses and Industrial facepieces come with a polyester mesh harness for increased comfort.