3M 501 PRE-FILTER RETAINERS X 2

• Used to hold 3M™ Particulate Filters 5N11 and 5P71/07194(AAD) in place on top of 3M™ RESPIRATOR 5000 Series and 3M™ Cartridges 6000 Series”.
• Simply snap on top of a 3M respirator cartridge and securely hold the the 5N11 and 5P71 pre-filters in place.