This 6000 Series Respirator is a NIOSH/MSHA approved half-mask respirator that is adaptable to a wide range of respiratory protection. Its low maintenance, comfortable design allows greater work flexibility by the use of five different type cartridges and two types of prefilters for a variety of work environments. Cartridges are simply twisted on or off of the facepiece for easy replacement which allows the facepiece to be used over and over. The facepiece is easy to clean and is supplied with a storage bag. Read all product instructions and warnings prior to use.