3m Cartridge/filter Retainer #501

The 3M™ Retainer 501, is designed for use with any 3M cartridges and filters where there is a need for particulate protection such chemicals, such as in a paint spray application.
This product is reusable and should be replaced when it becomes worn or damaged. The 3M™ Filter Retainer 501 is to be used with compatible products. Replacement part can extend respiratory equipment service life.
Sold per pair.