Filter replacement for the 4700.010 Swiss Air Respirator. Filters out 99.8% of particles in the air, including Covid-19, using the highest class of HEPA filtration. Includes pre-filter. Not compatible

Set of 50 pre-filters for the 4700.010 Swiss Air Respirator. Serves as a protective preliminary filter for the 4088.400 particle filter. Meant to be replaced more often than the particle filter. Not c