Fitment Details? 2097 filter is designed to be used with 6000/7000/6200/6800/FF-400 series respirators. It is an accessory part and must be installed on a respirator to work properly. Efficient Filtration? Made of composite multi-layer material, this filter effectively blocks particles while keeping airflow smooth for extended use. Wide Uses? Ideal for construction sites, metal grinding, stone processing, ceramic work, powder production, wall painting, wood processing and other on-site operations. Important Reminder? This product does not generate oxygen. Avoid use in low-oxygen areas. After-Sales Service? For any product-related issues, please feel free to message us. We will provide support and solve your problem quickly.