Cost-Effective SafetyOffering excellent protection against gases, vapors and particulates, the 5500 Series Half Mask Respirator is an economical safe breathing solution that does not compromise on features. | Many ApplicationsDesigned for workplace versatility, 5500 Series Masks are compatible with all of our N-Series cartridge types for use in multiple applications and work environments. | No Accidental DisconnectsThe cartridge connectors are threaded to prevent accidental disconnection while working. This is especially valuable when using the mask in PAPR and CF-SAR configurations. | Secure Face SealDesigned to fit most face types and sizes, the contoured face seal features a variable thickness to provide optimal sealing in each facial area. |