The 3Mmaintenance-free half mask 4277+ offers you an effective breathing protection as a user-friendly complete mask. The new, improved exhalation valve reduces the breathing resistance during the exhalation, reduces heat and moisture education and thus facilitates the breathe especially in hot and humid environments. Our Half-masks Series 4000+ has a soft, skin-friendly, silicone-free face mask. The FFABE 1P3R Filter Class D protects against many of the common organic gases, vapors and particles in the industrial environment. The light, well balanced design with the integrated, maintenance-free filter elements provides for a good peripheral vision.The integrated filter elements are maintenance-free. You can use the half-mask, until a change in accordance with filter change plan is pending or the filter elements are saturated. Then dispose of them properly. The comfortable straps with adjustable head support provides a secure fit and adapts to different head shapes and sizes. The fla