This device creates a reusable, adaptable cartride for N95, HEPA, and other filter media.  It allows the media to be attached to commercially available masks (still readily available and reusable), which ensures a reliable fit to the wearer's face while providing flexibility to make use of best available filtration media.  This design is specifically intended to be scalable from individual 3D printers through volume injection molding production.  It can be produced with various printers and from a wide range of materials.