Provides a minimum of 95% filter efficiency against certain oil and non-oil based aerosol particulates for excellent worker protection. An added carbon layer helps filter out nuisance levels (less than OSHA PEL) of organic vapors. Lightweight constructions help promote greater worker acceptance for all-day wear. Maintenance-free construction features adjustable noseclip with foam strip to reduce the potential for eyewear fogging. Dual head strap for optimum fit and worker comfort. Work applications include foundry operations, lab settings, agriculture, petrochemical manufacturing and undercoating where particles and nuisance levels of organic vapors may be present. NIOSH Approved. 20 per box. 6 boxes per case. Sold by the box.