Keep your respiratory systems running at peak safety and efficiency with the Gentex PureFlo 3000 NIOSH-Approved HEPA Replacement Filters (PF3000-02-002). Sold in a convenient pack of 5, these High-Efficiency Particulate Air (HEPA) filters are engineered exclusively for use with the Gentex PureFlo 3000 Powered Air-Purifying Respirator (PAPR) system. Delivering robust, reliable P100-class protection, these filters effectively remove fine dusts, particulates, fumes, and oil- or water-based mists without hindering your breathing comfort.