MAXIMUM SECURITY: Get a professional solution with the particle filter system that blocks nearly 100% of organic gases, smoke, dust, pollen, and other particles in the air. Cotton filters and replaceable cartridges ensure coverage. REPLACEMENT PACKAGE: This set contains 6 particle filters for the RHINO half-face mask and other compatible 3M filters. ERGONOMIC: The filters are designed to fit cartridges with a balanced center of gravity, offering maximum comfort and high security against gases, dust, and vapors in the air. VARIOUS USES: The half-face coverage offered by RHINO products is effective against painting, construction, chemicals, grinding, polishing, odor control, etc.