Product description The Miller Replacement Filter Sa00818 is needed for the LPR-100 Re-Usable Respirator. Make sure to have plenty on hand because you’re sure to need them. These filters come two in a package. These filters were easy to install in the mask. They allow much easier breathing than other masks. The mask (with these filters) allows you to wear your glasses comfortably. It also provides excellent fume protection. The Miller Replacement Filter Sa00818 is the most efficent filter on the market this is exactly what you need! Order your replacement filters today!