3M 501 Filter Retainer , Used to hold 3M Particulate Filters 5N11

3M - 501 Filter Retainer. 3M Half Face Reusable Respirators offer the user comfort and convenience coupled with the cost savings of a reusable respirator. Reusable - just dispose of the cartridge and filters when used to capacity. The swept back design of the cartridges improves balance and visibility. Can be disassembled, cleaned and reused. Very light-weight. Easy to adjust head straps. NIOSH approved N95. Case of 100.

• Length: 4.25"
• Width: 3.75"
• Depth: .9375"

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.