The 3M Filter Retainer 501 is used to hold 3M Particulate Filters 5N11 and 5P71 in place on top of 3M 5000, 6000 and 7000 series a respirators when used with a 3M respirator cartridge.


These filter retainers simply snap on top of a 3M respirator cartridge and securely hold the the 5N11 and 5P71 pre-filters in place.


Package contains (2) 3M 501R filter retainers. 3M 501 Filter Retainer, 2-Pack