Model: The special respiratory mask 9922 is designed for specific requirements, such as welding work. The integrated activated carbon layer minimizes irritations and unpleasant odors from gases and vapors. The padded nose bridge ensures an optimal fit to the shape of the face. The 3M Advanced Electret filter medium provides high protection with low breathing resistance. Additionally, the 3M Cool Flow exhalation valve prevents heat buildup inside the mask. High-quality textile straps.