NIOSH-approved filter protects you from exposure to lead, asbestos, cadmium, arsenic and more, making it ideal for use when welding, brazing, cutting, casting and soldering. Unique inlet helps keep your airflow channel unobstructed and clog free. For use with all compatible cartridges, facepieces and holders. Easy-to-install design allows you to replace your filter in seconds. Not for use in environments that are Immediately Dangerous to Life or Health (IDLH).