Features:

• These cartridges and pre-filters are approved by NIOSH (National Institute for Occupational Safety and Health) to the P95/OV category
• The long-life pre-filters are approved to the NIOSH P95 Class, so they are at least 95% efficient against oil- and non-oil based contaminants and are oil-proof so they have no time use limitation
• These cartridges include Pre-Filter covers with narrow openings to retain the P95 pre-filters on the cartridges and to assist in fit checking the respirator for proper fit