GVS Elipse ABE1-P3 Replacement Filter - SPR582 These filters are recommended for inorganic, organic, chemical gases, and dust in industrial applications. The gas cartridges contain special activated carbon granules with optimized properties such as pore size, grain size, activity level, and density, providing maximum adsorption performance and a truly low breathing resistance. Compatible with the following masks: SPR 580, 581, 583, 584. Package includes: 1 pair.