Sellstrom 32010 DP4 Lightweight Face Shield 60 ft Any alarm should be treated dust mop Any alarm should be treated as real: get everyone outside and call emergency services oil & non oil) Added Relief None Connection 3M bayonet Protection Type Particulate filtration Gas Vapor Cartridge Replacement No Compatible Systems Compatible 3M reusable respirators using the standard bayonet connection NIOSH Approval Approved under 42 CFR Part 84 Package Quantity Sold as a pair (2 filters) Replacement Replace when damaged 134 no air purifying respirator may be worn in an atmosphere that is IDLH or oxygen deficient (below 19 Recommended Use Cases