3M P3 Filter Pairs Bayonet Fitting System White 2138 (Pack of 20)

3M 2138 P3R (nuisance level organic vapour and acid gas) particulate filters. Stand alone, lightweight particulate filters, Lightweight, Low breathing resistance, Bayonet fitting system ensures precise and safe locking, Versatility: can be used on all 3M 6000, 7000 and 7500 Series Half Masks and Full Face Masks 1 BOX = 20 FILTERS (NOT PAIRS)