CN P1 V. Approved class FFP1 protective mask, for protection against health-hazardous dry and liquid-borne particles. The CN P1 V mask is fitted with a valve for exhalation, which also helps to reduce the temperature in the mask, reducing condensation and moisture build-up. Typical application areas include chemical dust, clay dust, concrete dust, etc. CN P1 V masks are packed in individual hygienic plastic bags, with 15 bags in a box and 150 in each transport case.