3M 60921 P100 Organic Vapor Cartridge — Combination, Bayonet, Magenta/Black Yellow-203 As a BRK 9120B interconnect

As a BRK 9120B interconnect smoke alarm

which means fewer parts to fail and nothing to charge

Choose the standard 3M 2091 if cost is the priority and comfort is secondary

It is an over-the-head headband muff

3M 60921 P100 Organic Vapor Cartridge — Combination, Bayonet, Magenta/Black Yellow-203 As a BRK 9120B interconnectThe 3M 60921 P100 Organic Vapor Cartridge combines certain organic vapour protection with a P100 filter at 99. 97% against oil and non oil aerosols, in the magenta black NIOSH color code, for 6000, 7000 and FF 400 Series bayonet facepieces under approval 7000029639. Our 3M 60921 review covers it against the range. The thing worth understanding about any combination cartridge: two halves wear out independently, and you cannot replace one without the