3m filters for face masks a1 a2 abek1 p2 p3 3m 5925 this 3m8482 particle filter insert p2 is designed for use 3m8482 6000 series cartridges with the 501 filter retainer equipped with advanced filter construction to reduce rapid clogging the filter remains lightweight and has low breathing resisitance protects against combined gasvapour and offers particulate protection 3m 5925 particle filter insert p2 10 pairs