The 3M Filter Retainer 501, Respiratory Protection System
Component holds 3M Particulate Filters 5N11 and
5P71/07194 (AAD) in place on top of 3M Respirators 5000
Series, 3M Cartridges 6000 Series and 3M Filter Adapter 603.
Sold: Per pair or 20 per box or 100 per case.
M501