3M™ 4251+ Reusable Half Mask with FFA1P2RD Filters The 3M™ 4251+ reusable half mask with integrated FFA1P2RD filters provides reliable respiratory protection against organic vapors and fine particles, making it ideal for spray painting, solvent handling, and sanding operations. Ready to use and lightweight, it features a low-resistance exhalation valve and a compact design that ensures both comfort and safety. Commonly used in automotive work, industrial maintenance, and construction environments. Learn more