2 Number ABEK - P filters, for use with half mask respirator. Easy-fit bayonet filter mechanism enables fast, secure first time connection.ABEK P Filters
MSA 430372 A2P3 R Combination Cartridge for Respiratory Filters (Pack of 2): Amazon.com: Tools & Home Improvement
Respirator Filters – how to select the correct filter type | Draeger
Choosing the right filters for your respirator - YouTube