3M 501 filter retainer

The 3M 501 filter retainer (pair) is used along with 5925 & 5935 particulate filters. Can be used to clamp filters to 6000 series gas & vapour cartridges. Alternatively, it can be used along with the 3M 603 filter adapter to attach 5925 & 5935 filters directly to 3M reusable face masks.
 
Features: 
For use with 3M particulate filters (5925, 5935)
Easy to snap into position over the filter
Used to clamp filters to 3M 6000 series gas/vapour cartridges
Used to clamp filters to 3M reusable face masks along with 3M 603 filteradapter