Original 3m 501 Filter Retainer/Filter Holder

'Used to hold 3MTM Particulate Filters 5N11 and 5P71/07194(AAD) in place on top of 3MTM Respirators 5000 Series and 3MTM Cartridges 6000 Series and 3MTM Filter Adapter 603. The 3MTM Filter Retainer 501, Respiratory Protection System Component holds 3MTM Particulate Filters 5N11 and 5P71/07194 (AAD) in place on top of 3MTM Respirators 5000 Series, 3MTM Cartridges 6000 Series and 3MTM Filter Adapter 603 (all respirators, filters, cartridges, and adapters sold separately).