Description The 3M 501 filter retainers allow the user to add a 3M 5000 Series particulate filter to a 6000 Series gas and vapour filter for combined respiratory protection. For use with 3M full-face and half-face respirator masks Allows a 3M 5000 Series particulate filter to be combined with a 3M 6000 Series gas and vapour filter for protection against airborne particles Easy to fit into position
