3M particle filter with bayonet fitting, P3 R, fits all half and full masks in the 6000 and 7000 series. This filter is particularly suitable for use in extremely dusty areas. The compact design of the filter makes it suitable for use in space-restricted working conditions. The protective cover protects the filter from sparks, water splashes, etc. The cover serves as a coarse dust filter that extends the life of the P3 filter. Extremely low inhalation resistance.