The MaxAir Systems XP Filter Cartridges PN 01031569 are designed for use in masks and respirators, providing personal protective equipment for industrial and safety applications. Made in the United States, these filter cartridges are reliable and efficient in keeping out harmful particles and contaminants. With a box of 3 cartridges included, you can easily ensure a steady supply for your business or facility maintenance needs. Plus, with free shipping included, you can get these high-quality cartridges quickly and conveniently.