The 3M 2135 P3R Particulate Filters are designed to provide P3 protection against high levels of fine dusts, and oil- or water-based mists. These replacement filters feature a bayonet connection system for easy and secure attachment to a wide range of compatible 3M reusable half and full face masks, including the 6000, 6500QL, 7000, 7500, and FF-400 Series. They offer low breathing resistance and a lightweight, well-balanced design to optimize the wearer's field of vision. Each pack contains one pair of filters, ensuring comprehensive respiratory defense in various professional settings such as insulation installation, wall and ceiling repairs, flooring, manual sanding, and working with hazardous particulates like asbestos and beryllium. The filters comply with European standards EN 143:2000 P3 R and are CE approved.